Science-Fiction & Fantasy
Books in This Category
3873 titles
- "Next Stop, Nowhere!"
- "Phone Me in Central Park"
- "Shadrach"
- "Utopia? Never!"
- $1,000 a Plate
- 'Mid Pleasures and Palaces
- 'That Very Mab'
- ...After a Few Words...
- ...And It Comes Out Here
- ...Or Your Money Back
- ...So They Baked a Cake
- 1931: A Glance at the Twentieth Century
- 2 B R 0 2 B
- 20.000 Mijlen onder Zee: Oostelijk Halfrond
- 20.000 Mijlen onder Zee: Westelijk Halfrond
- 30 Strange Stories
- 30-day wonder
- 4-1/2B, Eros
- A Bad Day for Sales
- A Bad Day for Vermin
- A Bad Town for Spacemen
- A Book of Ghosts
- A Bottle of Old Wine
- A brother to dragons, and other old-time tales
- A Case of Sunburn
- A Choice of Miracles
- A City Near Centaurus
- A cityless and countryless world
- A Coffin for Jacob
- A Cold Night for Crying
- A Columbus of Space
- A Connecticut Yankee in King Arthur's Court
- A Connecticut Yankee in King Arthur's Court, Part 1.
- A Connecticut Yankee in King Arthur's Court, Part 2.
- A Connecticut Yankee in King Arthur's Court, Part 3.
- A Connecticut Yankee in King Arthur's Court, Part 4.
- A Connecticut Yankee in King Arthur's Court, Part 5.
- A Connecticut Yankee in King Arthur's Court, Part 6.
- A Connecticut Yankee in King Arthur's Court, Part 7.
- A Connecticut Yankee in King Arthur's Court, Part 8.
- A Connecticut Yankee in King Arthur's Court, Part 9.
- A Crystal Age
- A Diversity of Creatures
- A Double Story
- A Dreamer's Tales
- A Dreamer's Tales
- A Fall of Glass
- A Feast of Demons
- A fighting man of Mars
- A Filbert Is a Nut
- A Fine Fix
- A Gift For Terra
- A Gift from Earth
- A Gleeb for Earth
- A Green Cloud Came
- A Guest of Ganymede
- A Hitch in Space
- A Honeymoon in Space
- A Hundred Years Hence: The Expectations of an Optimist
- A Husband for My Wife
- A jest and a vengeance
- A Journey in Other Worlds: A Romance of the Future
- A Journey into the Interior of the Earth
- A Journey to the Centre of the Earth
- A journey to the world under-ground
- A jövő század regénye, 1. rész
- A jövő század regénye, 2. rész
- A kiss for the conqueror
- A Knyght Ther Was
- A Kont-eset: Fantasztikus regény a XXI. századból
- A Likely Story
- A Little Journey
- A Little Knowledge
- A long way back
- A láthatatlan ember: Fantasztikus regény
- A Madman on Board
- A Man Obsessed
- A Martian Odyssey
- A Matter of Ethics
- A Matter of Honor: A Terran Empire novel
- A Matter of Importance
- A Matter of Order
- A Matter of Proportion
- A Matter of Protocol
- A Matter of Taste
- A mennyei küldönc
- A message from Mars
- A Message From Our Sponsor
- A Midnight Fantasy
- A Midsummer Night's Dream
- A Modern Utopia
- A Pail of Air
- A Place in the Sun
- A Place so Foreign
- A Planet for Your Thoughts
- A Planet Named Joe
- A pound of prevention
- A Pride of Islands
- A Princess of Mars
- A prison make
- A Prisoner in Fairyland (The Book That 'Uncle Paul' Wrote)
- A Prize for Edie
- A Question of Courage
- A Question of Identity
- A Romance of Two Worlds: A Novel
- A Scientist Rises
- A Slave is a Slave
- A Soldier's Home Is Battle
- A Son of Perdition: An Occult Romance
- A Son of the Ages: The Reincarnations and Adventures of Scar, the Link / A Story of Man From the Beginning
- A Spaceship Named McGuire
- A Stone and a Spear
- A Thought For Tomorrow
- A Thousand Degrees Below Zero
- A time to die
- A Toothache on Zenob
- A Touch of E Flat
- A Town Is Drowning
- A Trace of Memory
- A trace of memory
- A Transmutation of Muddles
- A Traveler in Time
- A trick of the mind
- A Trip to Mars
- A Trip to Venus: A Novel
- A Vision of Venus; Or, A Midsummer-Night's Nightmare
- A voice from the inner world
- A Voyage in a Balloon (1852)
- A Voyage to Arcturus
- A Voyage to the Moon
- A Voyage to the Moon / With Some Account of the Manners and Customs, Science and Philosophy, of the People of Morosofia, and Other Lunarians
- A Winter Amid the Ice, and Other Thrilling Stories
- A Witch in Time
- A Witch Shall Be Born
- A Woman's Place
- A World Apart
- A World by the Tale
- A World Called Crimson
- A World is Born
- A world to die for
- A Zloor for Your Trouble!
- A. D. 2000
- Aarnihauta ja muita juttuja
- Abbr.
- Abducted to Oz
- Absolutely no paradox
- Accept no substitutes
- Accidental Flight
- Acid Bath
- Across the Zodiac / The Story of a Wrecked Record
- Action on Azura
- Adaptation
- Added Upon / A Story
- Address: Centauri
- Adolescents Only
- Adrift in the Unknown; or, Queer Adventures in a Queer Realm
- Advance Agent
- Adventures in the Moon, and Other Worlds
- Adventures in Toyland; What the Marionette Told Molly
- After Ixmal
- After London; Or, Wild England
- After Some Tomorrow
- After world's end
- Against the Stone Beasts
- Age of anxiety
- Aide Memoire
- Aikakone
- Air Men o' War
- Alaeddin und die Wunderlampe / aus Tausend und eine Nacht
- Alarm Clock
- Albrecht
- Alcatraz of the Starways
- Alf's Button
- Alice in Blunderland: An Iridescent Dream
- Alice's Adventures in Wonderland / Illustrated by Arthur Rackham. With a Proem by Austin Dobson
- Alice's Adventures Under Ground / Being a facsimile of the original Ms. book afterwards developed into "Alice's Adventures in Wonderland"
- Alien
- Alien Equivalent
- Alien Minds
- All about Little Boy Blue
- All Around the Moon
- All cats are gray
- All Day September
- All Day Wednesday
- All In The Mind
- All Jackson's Children
- All That Earthly Remains
- All the People
- Alpha Say, Beta Do
- Always a Qurono
- Am I Still There?
- Amateur in Chancery
- Ambition
- Ambush: A Terran Empire vignette
- American Fairy Tales
- Among the gnomes
- Among the Scented Ones
- Amos Kilbright; His Adscititious Experiences / With Other Stories
- Amour, Amour, Dear Planet!
- An Anglo-American Alliance: A Serio-Comic Romance and Forecast of the Future
- An Art Shop in Greenwich Village
- An Earthman on Venus (Originally titled "The Radio Man")
- An Eel by the Tail
- An Elephant for the Prinkip
- An Empty Bottle
- An Enchanted Garden: Fairy Stories
- An enemy of peace
- An eye for the ladies
- An Incident on Route 12
- Anchorite
- And a little child
- And All the Earth a Grave
- And Gone Tomorrow
- And miles to go before I sleep
- And the Gods Laughed
- And Then the Town Took Off
- And there was light
- And we sailed the mighty dark
- Andiron Tales
- Angel's Egg
- Animat
- Anno 2070: Een blik in de toekomst
- Anno Domini 2000; or, Woman's Destiny
- Anno Domini 2071 / Translated from the Dutch Original
- Another Brownie Book
- Another Earth
- Another World: Fragments from the Star City of Montalluyah
- Answer, please answer
- Anthem
- Anthem
- Anticipations of the reaction of mechanical and scientific progress upon human life and thought
- Anton's last dream
- Anything You Can Do ...
- Anything You Can Do!
- Appointment In Tomorrow
- Arcturus Times Three
- Arm of the Law
- Armageddon, 1970
- Armageddon—2419 A.D.
- Army Boys in the French Trenches; Or, Hand to Hand Fighting with the Enemy
- Arqtiq: A Study of the Marvels at the North Pole
- As It Was
- As the Goose Flies
- Ask a Foolish Question
- Asleep in Armageddon
- Asneha, the legend of the opal
- Assassin
- Assassin
- Assignment in the Dawn
- Assignment on Venus
- Assignment's End
- Asteroid H277—Plus
- Asteroid Justice
- Asteroid of Fear
- Asteroid of the Damned
- Astounding Stories of Super-Science April 1930
- At the Back of the North Wind
- At the Earth's Core
- At the Earth's Core
- At the mountains of madness
- At the Post
- Atavism
- Atom Drive
- Atomic bonanza
- Attention Saint Patrick
- Attitude
- Attrition
- Auriol; or, The Elixir of Life
- Autour de la lune
- Autour de la Lune
- Aventures extraordinaires d'un savant russe; I. La lune
- Aventures extraordinaires d'un savant russe; II. Le Soleil et les petites planètes
- Aventures extraordinaires d'un savant russe; III. Les planètes géantes et les comètes
- Aventures extraordinaires d'un savant russe; IV. Le désert sidéral
- Avoidance Situation
- Awakening
- Ayesha, the Return of She
- Az egyszeri királyfi
- Az időgép
- B-12's Moon Glow
- B. C. 30,000
- Back to Julie
- Backlash
- Bad Medicine
- Bad Memory
- Badge of Infamy
- Baker's Dozens
- Balsamo, the magician; or, the memoirs of a physician
- Bargain Basement
- Barnstormer
- Baron Trump's Marvellous Underground Journey
- Battle for the Stars
- Battle Out of Time
- Battlefield in Black
- Battleground
- Be It Ever Thus
- Be young again!
- Beam Pirate
- Bear Trap
- Beast of prey
- Beauty contest?
- Beauty interrupted
- Bedside Manner
- Bee: The Princess of the Dwarfs
- Beer-Trust Busters
- Before Adam
- Before Egypt
- Belly Laugh
- Beneath the Red World's Crust
- Benefactor
- Berge Meere und Giganten
- Beside Still Waters
- Beside the golden door
- Betelguese
- Between the dark and the daylight
- Beware the Star Gods
- Beware, the Usurpers!
- Beyond Bedlam
- Beyond Lies the Wub
- Beyond Light
- Beyond our control
- Beyond Pandora
- Beyond the Black River
- Beyond the Door
- Beyond the Fearful Forest
- Beyond the stars
- Beyond The Thunder
- Beyond the Ultra-Violet
- Beyond the Vanishing Point
- Beyond the X Ecliptic
- Beyond the Yellow Fog
- Biddy and the silver man
- Big Ancestor
- Big Baby
- Big Pill
- Big Stupe
- Billy Bounce
- Bimmie Says
- Birds of a Feather
- Birthday Present
- Black Amazon of Mars
- Black Canaan
- Black Eyes and the Daily Grind
- Black hound of death
- Black Man's Burden
- Black Nick, the hermit of the hills; or, The expiated crime / A story of Burgoyne's surrender
- Black no more
- Black Priestess of Varda
- Black Silence
- Black Spirits and White: A Book of Ghost Stories
- Black-out
- Blank?
- Bleedback
- Bleekman's Planet
- Blessed are the meek
- Blind Man's Lantern
- Blind Play
- Blind Spot
- Blind Time
- Blood on my jets
- Blow the Man Down
- Blueblood
- Boarding party
- Bobbie Bubbles
- Bodyguard
- Bolden's Pets
- Border, Breed Nor Birth
- Box-garden
- Boy meets dyevitza
- Brain Teaser
- Brain Twister
- Brainchild
- Bramble Bush
- Bratton's Idea
- Bread Overhead
- Break a Leg
- Breakdown
- Breaking Point
- Breath of Beelzebub
- Breathes there a man
- Breeder Reaction
- Bride of the Dark One
- Bridge Crossing
- Brigands of the Moon
- Bright Islands
- Brightside Crossing
- Bring Back My Brain!
- Bring the Jubilee
- Brink of Madness
- Brknk's Bounty
- Brood of the Dark Moon / (A Sequel to "Dark Moon")
- Brood of the Witch-Queen
- Brown John's Body
- Bruggil's bride
- Bubbles of the Foam
- Buccaneer of the Star Seas
- Bullet with His Name
- Bumps and His Buddies
- Bunzo Farewell
- Burden the hand
- Business For the Lawyers
- But the Patient Lived
- But, I Don't Think
- Butterfly 9
- By Earthlight
- By Proxy
- Cakewalk to Gloryanna
- Call Him Nemesis
- Call Him Savage
- Calling the Empress
- Calling World-4 of Kithgol
- Can Such Things Be?
- Cancer World
- Capillária: Regény
- Captain Chaos
- Captain Chaos
- Captain Midas
- Captain of the Kali
- Captain Peabody
- Captive of the Centaurianess
- Captives of the Flame
- Captives of the Thieve-Star
- Car Pool
- Card Trick
- Cargo to Callisto
- Carmilla
- Carnacki, the Ghost Finder
- Castaways of Eros
- Castle of Terror
- Cat and Mouse
- Catalysis
- Category Phoenix
- Cave-Dwellers of Saturn
- Centauri Vengeance
- Cerebrum
- Chain Reaction
- Charity Case
- Charley de Milo
- Check and Checkmate
- Chicken Farm
- Child Christopher and Goldilind the Fair
- Child of the Sun
- Children of the Chronotron
- Children of the lens
- Chimera World
- Christmas Outside of Eden
- Cinderella Story
- Circle of Confusion
- Circle of Flight
- Circus
- Citadel
- Citadel of Lost Ships
- Citadel of the Green Death
- Citadel of the Star Lords
- Cities in the air
- Citizen Jell
- City of Endless Night
- City of the Living Flame
- Clarimonde
- Classified object
- Clean Break
- Clicking red heels
- Climate—disordered
- Coco Bolo: King of the Floating Islands
- Code Three
- Cogito, Ergo Sum
- Cold Ghost
- Colin II: A Novel
- Collector's Item
- Collector's Item
- Collision Orbit
- Colony of the Unfit
- Color Blind
- Colossus of Chaos
- Combat
- Combatman
- Come Into My Brain!
- Come into my parlor
- Comet's Burial
- Coming Attraction
- Coming of the Gods
- Common Denominator
- Communication
- Community Property
- Compatible
- Compete or Die!
- Competition
- Con-Fen
- Concordance: A Terran Empire concordance
- Conditionally Human
- Confidence Game
- Confidence Game
- Conjure wife
- Conquest Over Time
- Conservation
- Consignment
- Conspiracy on Callisto
- Contagion
- Contamination Crew
- Contes Fantastiques et Contes Littéraires
- Control Group
- Cool air
- Coppertop: The Queer Adventures of a Quaint Child
- Corpus earthling
- Corsairs of the cosmos
- Cosmic Castaway
- Cosmic Castaway
- Cosmic Saboteur
- Cosmic striptease
- Cosmic Tragedy
- Cosmic Yo-Yo
- Cost of Living
- Countdown
- Counterweight
- Course of Empire
- Craphound
- Creatures of the Abyss
- Creatures of Vibration
- Criminal Negligence
- Crisis on Titan
- Crisis!
- Critical difference
- Cronus of the D. F. C.
- Cross Purposes and The Shadows
- Crossroads of Destiny
- Cry Chaos!
- Cry from a Far Planet
- Cry Snooker
- Crypt-City of the Deathless One
- Csodálatos történetek
- Cube Root of Conquest
- Cubs of the Wolf
- Cue for Quiet
- Cully
- Cultural Exchange
- Cultural Exchange
- Cum Grano Salis
- Cæsar's Column: A Story of the Twentieth Century
- D-99: a science-fiction novel
- Da terra à lua, viagem directa em 97 horas e 20 minutos
- Daisy; or, The Fairy Spectacles
- Dalrymple's Equation
- Damned If You Don't
- Damned: The Intimate Story of a Girl
- Danger in Deep Space
- Danger in the Void
- Dangerous Quarry
- Dans l'abîme
- Dark Destiny
- Dark Reality
- Dark recess
- Dark Windows
- Darkness and Dawn
- Das grüne Gesicht: Ein Roman
- Das höllische Automobil: Novellen
- Das Mädchen aus der Feenwelt; oder, Der Bauer als Millionär
- Das zweite Gesicht: Eine Liebesgeschichte
- Date of publication, 2083 A.D.
- Dateline: Mars
- Daughter of the Night
- Daughters of Doom
- Dave Dawson on Guadalcanal
- David and the Phoenix
- David Blaize and the Blue Door
- Davy and the Goblin / What Followed Reading 'Alice's Adventures in Wonderland'
- Dawn of the Demigods
- Dawningsburgh
- Day of the Comet
- Day of the Moron
- Day of Wrath
- Daybreak: A Romance of an Old World
- De Gouden Vaas
- De kleine Johannes
- De la terre à la lune, trajet direct en 97 heures 20 minutes
- De la terre à la lune: trajet direct en 97 heures 20 minutes
- De onderaardsche reis van Klaas Klim / Behelzende eene nieuwe beschrijving van den aardkloot
- De Reis naar de Maan in 28 dagen en 12 uren
- De verliefde ezel
- Dead End
- Dead Giveaway
- Dead Man's Planet
- Dead Man's Planet
- Dead Ringer
- Dead World
- Deadly City
- Deadly decoy
- Dear Brutus
- Dear Nan Glanders
- Dearest
- Dearest Enemy
- Death and Taxes
- Death in Transit
- Death Makes a Mistake
- Death of a B.E.M.
- Death of a mutant
- Death of a Spaceman
- Death Star
- Death Walks on Mars
- Death Wish
- Death's Wisher
- Death, the Knight, and the Lady: A Ghost Story
- Deathworld
- Decision
- Deepfreeze
- Defense Mech
- Definition
- Delay in Transit
- Delayed Action
- Demonien ruhtinatar: Kertomus
- Den Underbara Spegeln
- Deny the Slake
- Der Barometermacher auf der Zauberinsel
- Der Diamant des Geisterkönigs
- Der Eroberer / Eine poetische Phantasie in fünf Kaprizzen. Aus alten Urkunden mit neuen Anmerkungen
- Der Goldene Topf
- Der letzte Zentaur
- Der rote Stern: Ein utopischer Roman
- Der Vampyr, oder: Die Todtenbraut. Zweiter Theil. / Ein Roman nach neugriechischen Volkssagen
- Der Weltuntergang: Eine Phantasie aus dem Jahre 1900
- Derelict
- Derelicts of Uranus
- Design for Doomsday
- Desire No More
- Despoilers of the Golden Empire
- Destination—Death
- Destiny times three
- Destiny Uncertain
- Devil Crystals of Arret
- Diagnosis
- Dick, Marjorie and Fidge: A Search for the Wonderful Dodo
- Dictator of Time
- Die Elixiere des Teufels
- Die erste Stunde nach dem Tode: Eine Gespenstergeschichte
- Die gefesselte Phantasie
- Die Reise zum Mars
- Die schwarzen Brüder: Eine abentheuerliche Geschichte. 3/3
- Die seltsamen Geschichten des Doktor Ulebuhle
- Die Weltensegler. Drei Jahre auf dem Mars.
- Die, Shadow!
- Dieudonat: Roman
- Dig me no grave
- Diplomatic Immunity
- Disaster Revisited
- Disowned
- Disqualified
- Distress Signal
- Disturbing Sun
- Divinity
- Divvy up
- Do Unto Others
- Do you believe in fairies?
- Doctor
- Doctor Dolittle in the Moon
- Doctor Grimshawe's Secret — a Romance
- Doctor Universe
- Dogfight—1973
- Don Miguel Lehumada: discoverer of liquid from the sun's rays / an occult romance of Mexico and the United States
- Don Rodriguez; Chronicles of Shadow Valley
- Don't look now
- Don't Panic!
- Don't Shoot
- Doom of the House of Duryea
- Doomsday 257 A.G.!
- Doomsday Eve
- Doomsday on Ajiat
- Doorstep
- Doorway to Destruction
- Doorway to Kal-Jmar
- Dorothy and the Wizard in Oz
- Dorothy and the Wizard in Oz
- Dorothy's Mystical Adventures in Oz
- Dot and Tot of Merryland
- Double Identity
- Double or Nothing
- Double Standard
- Double Take
- Double Take
- Double Trouble
- Double-Cross
- Down and Out in the Magic Kingdom
- Down the Snow Stairs; Or, From Good-Night to Good-Morning
- Down to Earth
- Down to the Worlds of Men
- Down Went McGinty
- DP
- Dr. Kometevsky's Day
- Dr. Moreau szigete: Regény
- Dracula
- Dracula
- Dracula's Guest
- Dragon moon
- Dread-Flame of M'Tonak
- Dream World
- Dream's end
- Dreamer's World
- Dreams and Dream Stories
- Dreams of an astronomer
- Dreamtown, U.S.A.
- Drolls From Shadowland
- Drome
- Droozle
- Duar the accursed
- Duel in Black
- Duel on Syrtis
- Dumbwaiter
- Dust Unto Dust
- Dynasty of the lost
- E Being
- Each Man Kills
- Earth Alert!
- Earth Is Missing!
- Earth needs a killer
- Earth transit
- Earth's Gone to the Dogs!
- Earthbound
- Earthbound
- Earthmen Ask No Quarter!
- Earthmen Bearing Gifts
- Earthmen Die Hard!
- Earths In Our Solar System Which Are Called Planets, and Earths In The Starry Heaven Their Inhabitants, And The Spirits And Angels There
- Earthsmith
- East in the Morning
- Eastern Standard Tribe
- Easy Does It
- Ecology on Rollins Island
- Eddie
- Edison's Conquest of Mars
- Edison's Conquest of Mars
- Education of a Martian
- Egocentric Orbit
- Eight Keys to Eden
- Eight Million Dollars From Mars!
- Ein Blick in die Zukunft / Eine Antwort auf: Ein Rückblick von Edward Bellamy
- Eine Reise nach Freiland
- Einstein's planetoid
- El anacronópete; Viaje a China; Metempsicosis
- El paraiso de las mujeres / Novela
- Electro-episoded in A.D. 2025
- Electron Eat Electron
- Elegy
- Ely's Automatic Housemaid
- Empire
- Enchantress of Venus
- End as a Hero
- End as a World
- Engines of the Gods
- Ennen Aatamia
- Ensimmäiset ihmiset kuussa
- Enter the Nebula
- Equality
- Equation for Time
- Equation of Doom
- Erewhon Revisited Twenty Years Later, Both by the Original Discoverer of the Country and by His Son
- Eräitä kertoelmia
- Es Percipi
- Escape From Pluto
- Escape Mechanism
- Escape Velocity
- Eternal Zemmd Must Die!
- Etidorhpa; or, The End of Earth. / The Strange History of a Mysterious Being and the Account of a Remarkable Journey
- Eva's Adventures in Shadow-Land
- Evans of the Earth-Guard
- Even Stephen
- Everybody knows Joe
- Everychild
- Excitement for sale
- Exile
- Exile from Space
- Exile From Venus
- Exiles of the Three Red Moons
- Exit From Asteroid 60
- Expediter
- Expedition to Pluto
- Exploiter's End
- Exploration Team
- Export Commodity
- Extract from Captain Stormfield's Visit to Heaven
- Extracts from the Galactick Almanack: Music Around the Universe
- Eyes That Watch
- F.O.B. Venus
- Face au drapeau
- Facing the Flag
- Failure on Titan
- Fair and Warmer
- Fairies Afield
- Fairy dreams
- Fairy Tales from the German Forests
- Falcons of Narabedla
- Family Tree
- Fancy free
- Far enough to touch
- Far from Home
- Farewell message
- Farmer
- Fearful Rock
- Fearful Symmetry: A Terran Empire novel
- February Strawberries
- Fee of the Frontier
- Feet of Clay
- Fekete gyémántok
- Felony
- Fifteen Hundred Miles an Hour
- Fifty Per Cent Prophet
- Fifty years hence: or, What may be in 1943 / A prophecy supposed to be based on scientific deductions by an improved graphical method
- Fifty-One Tales
- Figures of Earth: A Comedy of Appearances
- Final Examination
- Final Glory
- Final Weapon
- Finders keepers
- Fine Feathers
- Firegod
- First Lensman
- First Man
- First on the Moon
- Firth's World
- Fish Fry
- Five Children and It
- Five Children and It
- Five Plays
- Five Thousand Miles Underground; Or, the Mystery of the Centre of the Earth
- Five Weeks in a Balloon / Or, Journeys and Discoveries in Africa by Three Englishmen
- Flame-Jewel of the Ancients
- Flamedown
- Flatland: A Romance of Many Dimensions
- Flatland: A Romance of Many Dimensions
- Flatland: A Romance of Many Dimensions
- Flecker's magic
- Flight From Time
- Flight From Tomorrow
- Flight Into the Unknown
- Flight Perilous!
- Flight Through Tomorrow
- Floating Fancies among the Weird and the Occult
- Flowering Evil
- Fly By Night
- Flyvefisken »Prometheus« (En Fremtidsfantasi)
- Fog of the Forgotten
- For service rendered
- Forbidden flight
- Forced Move
- Forever
- Forever is Not So Long
- Forever We Die!
- Forget Me Nearly
- Forgotten danger
- Formula for Conquest
- Formula for murder
- Forsyte's Retreat
- Founding Father
- Foundling on Venus
- Four Weird Tales
- Four-Day Planet
- Frank Reade and His Steam Horse
- Frank Reade Jr. and His Engine of the Clouds / Or, Chased Around the World in the Sky
- Frank Reade Jr.'s Air Wonder, The "Kite"; Or, A Six Weeks' Flight Over the Andes
- Frank Reade Jr.'s Submarine Boat; or, to the North Pole Under the Ice.
- Frank Reade, Jr.'s Search for the Silver Whale / Or, Under the Ocean in the Electric "Dolphin"
- Frank Reade, Jr., and His Electric Ice Ship; or, Driven Adrift in the Frozen Sky.
- Frank Reade, Jr., and his new steam man; or, the young inventor's trip to the far west
- Frank Reade, Jr., Fighting the Terror of the Coast
- Frank Reade, Jr., With His New Steam Man in Central America
- Frank Reade, Jr., with his new steam man in Mexico / or, hot work among the greasers
- Frankenstein, ou le Prométhée moderne Volume 1 (of 3)
- Frankenstein, ou le Prométhée moderne Volume 2 (of 3)
- Frankenstein, ou le Prométhée moderne Volume 3 (of 3)
- Frankenstein; Or, The Modern Prometheus
- Frankenstein; Or, The Modern Prometheus
- Frankenstein; Or, The Modern Prometheus
- Freedom
- Freeland: A Social Anticipation
- Freeway
- Freiland: Ein sociales Zukunftsbild
- Fresh Air Fiend
- Friend Island
- Friends and Enemies
- Frigid Fracas
- From an Unseen Censor
- From Monkey to Man, or, Society in the Tertiary Age / A Story of the Missing Link, Showing the First Steps in Industry, Commerce, Government, Religion and the Arts; With an Account of the Great Expedition From Cocoanut Hill and the Wars in Alligator Swamp
- From outer space
- From the Earth to the Moon, Direct in Ninety-Seven Hours and Twenty Minutes: and a Trip Round It
- From the Earth to the Moon; and, Round the Moon
- From Whose Bourne
- From Zone to Zone / Or, The Wonderful Trip of Frank Reade, Jr., with His Latest Air-Ship
- Fugue
- Futuria Fantasia, Fall 1939
- Futuria Fantasia, Summer 1939
- Futuria Fantasia, Winter 1940
- G-r-r-r...!
- Galactic Ghost
- Galactic Patrol
- Gama Is Thee!
- Gambler's World
- Game preserve
- Games
- Gangway for Homer
- Garden of Evil
- Gargantua and Pantagruel, Illustrated, Book 5
- Garrity's Annuities
- Garth and the Visitor
- Gawayne and the Green Knight: A Fairy Tale
- General Max Shorter
- Generals Help Themselves
- Genesis
- Genesis!
- Gentlemen: please note
- George Loves Gistla
- Get Out of My Body!
- Get out of our skies!
- Giants on the Earth
- Girl of the Silver Sphere
- Girls in Bookland
- Give Back a World
- Gladiator
- Glinda of Oz / In Which Are Related the Exciting Experiences of Princess Ozma of Oz, and Dorothy, in Their Hazardous Journey to the Home of the Flatheads, and to the Magic Isle of the Skeezers, and How They Were Rescued from Dire Peril by the Sorcery of Glinda the Good
- Glinda of Oz / In Which Are Related the Exciting Experiences of Princess Ozma of Oz, and Dorothy, in Their Hazardous Journey to the Home of the Flatheads, and to the Magic Isle of the Skeezers, and How They Were Rescued from Dire Peril by the Sorcery of Glinda the Good
- Glow Worm
- Go to sleep, my darling
- Goddess of the Moon
- Gods of Space
- Gods of the North
- Gold in the Sky
- Goma's Follicles
- Gone Fishing
- Goodbye, Dead Man!
- Gourmet
- Gramp
- Grampa in Oz
- Grandma Perkins and the Space Pirates
- Granny's Wonderful Chair
- Graveyard of Dreams
- Gravy Train
- Gray Lensman
- Green Grew the Lasses
- Green Tea; Mr. Justice Harbottle
- Greener Than You Think
- Greylorn
- Grifters' Asteroid
- Grim Green World
- Grim Tales
- Grove of the Unborn
- Growing Season
- Growing up on Big Muddy
- Guaranteed—Forever!
- Guardians of the Tower
- Guest Expert
- Gulliver of Mars
- Gulliver's Reis Naar Liliput
- Gulliver's Travels
- Gulliver's Travels into Several Remote Nations of the World
- Gulliver's Travels into Several Remote Regions of the World
- Gulliverin matkat kaukaisilla mailla
- Gun for Hire
- Gunnison's Bonanza
- Hagerty's Enzymes
- Hail to the Chief
- Half Around Pluto
- Half past Alligator
- Half-Past Bedtime
- Halftripper
- Hall of Mirrors
- Ham Sandwich
- Handy Mandy in Oz
- Handyman
- Hang head, vandal
- Hanging by a Thread
- Hanit the Enchantress
- Hans Andersen's Fairy Tales
- Happy Ending
- Happy Rain Night
- Hard Guy
- Hartmann, the Anarchist; Or, The Doom of the Great City
- Harwood's Vortex
- Has Anyone Here Seen Kelly?
- Hawk Carse
- He
- He
- He Walked Around the Horses
- He who served
- Headhunters of Nuamerica
- Healing Rays in Space
- Heart
- Heavenly Gifts
- Heel
- Heir Apparent
- Heist Job on Thizar
- Hellflower
- Hellhounds of the Cosmos
- Helpfully Yours
- Henry Brocken / His Travels and Adventures in the Rich, Strange, Scarce-Imaginable Regions of Romance
- Henry Horn's X-Ray Eye Glasses
- Here and beyond
- Herland
- Hero From Yesterday
- Heroic Romances of Ireland, Translated into English Prose and Verse — Volume 1
- Het Geheimzinnige Eiland / De Luchtschipbreukelingen
- Het toekomend jaar drie duizend: Eene mijmering
- Het voedsel der Goden en hoe het op Aarde kwam
- Heu-Heu, or The monster
- Hex
- Hideout
- Hieroglyphic Tales
- High Dragon Bump
- Highwayman of the Void
- Highways in Hiding
- Himmelsvolk: Ein Buch von Blumen, Tieren und Gott
- His Master's Voice
- Histoire d'un casse-noisette
- Histoire du véritable Gribouille
- Histoire fantastique du célèbre Pierrot / Écrite par le magicien Alcofribas; traduite du sogdien par Alfred Assollant
- Histoires extraordinaires
- Histoires incroyables, Tome I
- History Repeats
- Hoiman and the Solar Circuit
- Hold Back Tomorrow
- Hold Onto Your Body!
- Holes, Incorporated
- Home Again, Home Again
- Home is the Spaceman
- Home is Where You Left It
- Homecoming Horde
- Homesick
- Homo Inferior
- Honey-Bee / 1911
- Honeymoon in bedlam
- Hop O' My Thumb
- Horsesense Hank in the parallel worlds
- Hostage of Tomorrow
- Hostage: A Terran Empire story
- Hot Planet
- Houlihan's Equation
- House Operator
- How deep the grooves
- How joy was found
- How to Make Friends
- Human Error
- Hunt the Hog of Joe
- Hunt the Hunter
- Hunter Patrol
- Hunters Out of Space
- Hunting License
- Hypolympia; Or, The Gods in the Island, an Ironic Fantasy
- Hämähäkkilaakso ja muita kertomuksia
- I Am a Nucleus
- I bring fresh flowers
- I Like Martian Music
- I Was a Teen-Age Secret Weapon
- I'll dream of you
- I'll Kill You Tomorrow
- I'll See You in My Dreams
- I'm a Stranger Here Myself
- I, Executioner
- I, gardener
- I, Mars
- I, the Unspeakable
- Ice Planet
- Identity
- Idolatry: A Romance
- If at First You Don't...
- If You Was a Moklin
- If You're Smart—
- Ignatz
- Ihmisten kapina
- Ikuinen rakastaja
- Il fantasma di Canterville e il delitto di Lord Savile
- Il tallone di ferro
- Ilmasota: Tulevaisuuden kuvaus
- Ilmojen valloittaja
- Image of the Gods
- Imitation of death
- Impact
- In a Glass Darkly, v. 2/3
- In Case of Fire
- In Caverns Below
- In His Image
- In Purpurner Finsterniß / Roman-Improvisation aus dem dreißigsten Jahrhundert
- In Search of the Unknown
- In the Cards
- In the Closed Room
- In the Clutch of the War-God
- In the Control Tower
- In the Court of King Arthur
- In the Dark
- In the Days of the Comet
- In the Earth's Shadow
- In the Garden
- In the Jag-Whiffing Service
- In the Orbit of Saturn
- In the Sphere of Time
- In the year 2889
- In the Year Ten Thousand
- Inconstancy
- Incredible Adventures
- Index of the Project Gutenberg Works of Charlotte Perkins Gilman
- Index of the Project Gutenberg Works of Grant Allen
- Indirection
- Industrial Revolution
- Infernaliana / Anecdotes, petits romans, nouvelles et contes sur les revenans, les spectres, les démons et les vampires
- Infiltration
- Infinite Intruder
- Infinity's Child
- Inheritance
- Inhibition
- Ini: Ein Roman aus dem ein und zwanzigsten Jahrhundert
- Innocent at Large
- Inside Earth
- Inside John Barth
- Insidekick
- Instant of Decision
- Instinct
- Intermere
- Into the fourth dimension
- Into the Sun
- Invader From Infinity
- Invaders from the Infinite
- Invaders of the Forbidden Moon
- Invasion
- Irresistible Weapon
- Islands of Space
- Isle of the Undead
- It
- It Could Be Anything
- It Takes a Thief
- It's a Small Solar System
- It's All Yours
- It's Raining Frogs!
- It's Your Fairy Tale, You Know
- J. S. Le Fanu's Ghostly Tales, Volume 1
- Jabberwock, Beware!
- Jack and the Check Book
- Jack of No Trades
- Jack of No Trades
- Jack Pumpkinhead of Oz
- Jackie sees a star
- Jamieson
- Jason, Son of Jason
- Jaywalker
- Jekyll-Hyde Planet
- Jewel sowers: a novel
- Jewels of Gwahlur
- Jimsy and the Monsters
- Jinx Ship to the Rescue
- Joe Carson's Weapon
- John Dough and the Cherub
- John Holder's Weapon
- John Jones's Dollar
- John of the Woods
- John Silence, Physician Extraordinary
- John Whopper / The Newsboy
- John's Other Practice
- Join Our Gang?
- Jonah
- Jonah of the Jove-Run
- Jordens Inre
- Journey for the Brave
- Journey Work
- Journeys to the Planet Mars; or, Our Mission to Ento
- Jubilation, U.S.A.
- Judas Ram
- Juggernaut of Space
- Julius LeVallon: An Episode
- Jungle in the Sky
- Jungle Tales of Tarzan
- Junior
- Jupiter found
- Jupiter's Joke
- Jurgen: A Comedy of Justice
- Juvenile Delinquent
- Kabumpo in Oz
- Kadonnut maailma
- Karl Grier
- Kauhun saari
- Keep Out
- Keep Your Shape
- Keeper of the Deathless Sleep
- Keeping Tryst: A Tale of King Arthur's Time
- Keijukainen
- Kelet tündér világa, vagy Szaif Züliázán szultán. (1. kötet) / Aráb rege
- Kelet tündér világa, vagy Szaif Züliázán szultán. (2. kötet) / Aráb rege
- Kernel Cob And Little Miss Sweetclover
- Key Out of Time
- Khaled, A Tale of Arabia
- Kid Stuff
- Kiljusen herrasväki satumaassa
- Kill Me if You Can!
- King of the Hill
- Klein Zaches, genannt Zinnober: Ein Märchen
- Knock Three Times!
- Know Thy Neighbor
- Komet und Erde: Eine astronomische Erzählung
- Kort verhaal van eene aanmerkelijke luchtreis en nieuwe planeetontdekking
- Kreativity For Kats
- Kun nukkuja herää: Romaani
- Kuolematon kuningatar
- König Nußknacker und der arme Reinhold / Ein Kindermährchen in Bildern
- L'autre monde; ou, Histoire comique des Etats et Empires de la Lune
- L'oiseau blanc: conte bleu
- L'Orco
- L'élixir de vie: Conte magique
- L'île mystérieuse
- L.P.M. : The End of the Great War
- La Aventuroj de Alicio en Mirlando
- La carrosse aux deux lézards verts
- La chasse au météore
- La Coupe; Lupo Liverani; Le Toast; Garnier; Le Contrebandier; La Rêverie à Paris
- La Fin Des Livres
- La guerre des mondes
- La Guerre du Feu: Roman des âges farouches
- La lasta Usonano
- La mandragore
- La mirinda historio de Petro Schlemihl
- La Mort de la Terre, roman, suivi de contes
- La porte des rêves
- La vampire
- Laboratory
- Lady into Fox
- Lady Into Hell-Cat
- Lair of the Dragonbird
- Lake of Fire
- Lancelot Biggs cooks a pirate
- Lancelot Biggs, Master Navigator
- Land Beyond the Flame
- Landscape with figures
- Larson's Luck
- Las Fuerzas Extrañas
- Last Call
- Last Call for Doomsday!
- Last Call From Sector 9G
- Last Enemy
- Last Night Out
- Last Resort
- Last Run on Venus
- Latent Image
- Later Than You Think
- Lazarus Come Forth
- Le avventure d'Alice nel paese delle meraviglie
- Le cas étrange du docteur Jekyll; Un logement pour la nuit
- Le diable amoureux
- Le Diable amoureux; L'Honneur perdu et recouvré; Rachel ou la belle juive
- Le Diable au Sahara
- Le diable boiteux, tome I
- Le Docteur Ox
- Le grillon du foyer
- Le Horror Altissime
- Le Merveilleux voyage de Nils Holgersson à travers la Suède
- Le monde tel qu'il sera
- Le Vingtième Siècle: La Vie Électrique
- Learning Theory
- Lease to Doomsday
- Leave, Earthmen—Or Die!
- Left hand, right hand
- Legacy
- Les Cinq Cents Millions De La Bégum
- Les fleurs animées - Tome 1
- Les fleurs animées - Tome 2
- Les Indes Noires
- Les trois Don Juan / Don Juan Tenorio d'Espagne, Don Juan de Maraña des Flandres, Don Juan d'Angleterre
- Les voyages de Gulliver
- Les Xipéhuz
- Less than Human
- Lesson for Today
- Let 'Em Breathe Space!
- Let Space Be Your Coffin
- Let the Ants Try
- Let There Be Light
- Let's Get Together
- Letter of the Law
- License to Steal
- Lie on the Beam
- Life in a Thousand Worlds
- Life Sentence
- Light Ahead for the Negro
- Lighter Than You Think
- Lilith: A Romance
- Limanora
- Lion Loose
- Little Boy
- Little Brother
- Little Fuzzy
- Little men of space
- Little Mr. Thimblefinger and His Queer Country
- Little Tom
- Little Wizard Stories of Oz
- Living Alone
- Lone Star Planet
- Lonesome Hearts
- Longhead: The Story of the First Fire
- Look to the Stars
- Looking Backward, 2000 to 1887
- Looking Backward: 2000-1887
- Looking forward
- Looking Further Forward / An Answer to Looking Backward by Edward Bellamy
- Loot of the Void
- Lord of a Thousand Suns
- Lord of the Silent Death
- Lord of the World
- Lord Tedric
- Lords of the Stratosphere
- Lorelei
- Lorelei of the Red Mist
- Lost Art
- Lost in the Atlantic Valley; Or, Frank Reade, Jr., and His Wonder, the "Dart"
- Lost in the Future
- Lost in Translation
- Lost on the Moon; Or, in Quest of the Field of Diamonds
- Lost on Venus
- Love Among the Robots
- Love and Moondogs
- Love Story
- Lucian's True History
- Lud-in-the-Mist
- Lukundoo, and other stories
- Lumottu maa: Kertomus nuorisolle
- Luna Escapade
- Lunar Station
- Maailman loppu: Romaani ankarasta elämästä avaruudessa
- Machine of Klamugra
- Made in Tanganyika
- Made to Measure
- Madmen of Mars
- Magic / A Fantastic Comedy
- Magic London
- Maiden Mona the Mermaid: A Fairy Play for Fairy People
- Maid—To Order
- Make me an offer
- Make Mine Homogenized
- Makers
- Malvina of Brittany
- Man Alone
- Man in a Quandary
- Man in a Sewing Machine
- Man Made
- Man nth
- Man of Distinction
- Man of Many Minds
- Man Overboard!
- Man's Best Friend
- Man-Trap
- Manners and Customs of the Thrid
- Mardi, and a voyage thither, Vol. 2 (of 2)
- Marigold
- Marley's Chain
- Mars and Its Mystery
- Mars Confidential
- Mars is My Destination
- Marsin jumalat: Seikkailuromaani
- Marsin prinsessa
- Marsin ritarit
- Marsin sotavaltias
- Martian Nightmare
- Martian Terror
- Martian V.F.W.
- Martians Never Die
- Martians, keep out!
- Marty the Martian
- Martyr
- Martyr's Flight
- Mary Anonymous
- Mask of Death
- Master of Life and Death
- Master of None
- Master of the Moondog
- Masters of Space
- Masters of the vortex
- Matchmaker
- Mate in Two Moves
- Mating center
- Matkustus maan keskipisteeseen
- McGonigal's Worm
- McIlvaine's Star
- Me, Myself and I
- Measure for a Loner
- Meccania, the Super-State
- Med Luftskib til Mars: Fantastisk Fremtidsfortælling
- Med Service
- Med Ship Man
- Medal of Honor
- Meddler's Moon
- Medusa's coil
- Meet Me in Tomorrow
- Meeting at the Summit
- Meeting of the Board
- Meeting of the Minds
- Meleager
- Melmoth the Wanderer, Vol. 3
- Melmoth the Wanderer, Vol. 4
- Membership Drive
- Memorials of Shrewsbury / being a concise description of the town and its environs, adapted as a general guide for the information of visitors and residents
- Men into space
- Men Without a World
- Menace From Vega
- Menace of the Mists
- Mercenary
- Mercia, the astronomer royal: A romance
- Mercy Flight
- Meridiana: The Adventures of Three Englishmen and Three Russians / In South Africa
- Merrimeg
- Message From Mars
- Message from Venus
- Messenger
- Metamorphosis
- Meteor strike!
- Meteor-Men of Mars
- Metropolis
- Mex
- Mezzerow Loves Company
- Micro-Man
- Micromegas
- Micromégas
- Mightiest Qorn
- Milk Run
- Millennium
- Mimsy's Joke
- Mind Stealers of Pluto
- Mind Worms
- Mindsnake
- Minions of the Crystal Sphere
- Ministry of Disturbance
- Minnie; or, The Little Woman: A Fairy Story
- Minor Detail
- Minos of Sardanes
- Miracle
- Miracle by Price
- Mirage for Planet X
- Misrule
- Miss Tweedham's Elogarsn
- Missing Link
- Mistake inside
- Mists of Mars
- Mizora: A Prophecy / A MSS. Found Among the Private Papers of the Princess Vera Zarovitch
- Mjallhvít: Æfintýri Handa Börnum
- Mo-Sanshon!
- Modus Vivendi
- Moment of Truth
- Momentum
- Monkey On His Back
- Monsoons of Death
- Monster
- Monster of the Asteroid
- Moon Glow
- Moon of Danger
- Moon of memory
- Moon of Treason
- Moonlight and Robots
- Mopsa the Fairy
- Mopsa the Fairy
- Moral Equivalent
- Morale: A Story of the War of 1941-43
- Morgue Ship
- Moving the Mountain
- Mr. Biggs goes to town
- Mr. Caxton draws a Martian bird
- Mr. Chipfellow's Jackpot
- Mr. Loneliness
- Mr. Meek Plays Polo
- Mr. Meek—Musketeer
- Mr. Munchausen / Being a True Account of Some of the Recent Adventures beyond the Styx of the Late Hieronymus Carl Friedrich, Sometime Baron Munchausen of Bodenwerder
- Mr. Oseba's Last Discovery
- Mr. Replogle's dream
- Mr. Spaceship
- Mr. Wicker's Window
- Muck Man
- Murder Beneath the Polar Ice
- Murder mask
- Murderer's Base
- Murderer's chain
- Musta härkä
- Mutineer
- Mutiny in the Void
- My Aunt Margaret's Mirror
- My Fair Planet
- My Father, the Cat
- My Friend Bobby
- My Lady Greensleeves
- My Lady Selene
- My past is mine
- My robot
- My Shipmate—Columbus
- My sweetheart's the Man in the Moon
- Myrkkyvyöhyke
- Mystery at Mesa Flat
- Märchen
- Naar het middelpunt der Aarde
- Nachtstücke
- Nahkaratti
- Name Your Symptom
- Narakan Rifles, About Face!
- Naudsonce
- Navy Day
- Needler
- Nequa; or, The Problem of the Ages
- Never Come Midnight
- Never Gut-Shoot a Wampus
- Never meet again
- Never Trust a Thief!
- New Amazonia: A Foretaste of the Future
- New Apples in the Garden
- New Atlantis
- New Bodies for Old
- New Hire
- New Lamps
- New Year's Wake: A Terran Empire story
- News from Nowhere; Or, An Epoch of Rest / Being Some Chapters from a Utopian Romance
- Newshound
- Next Door, Next World
- Nice Girl with 5 Husbands
- Niels Holgersson's Wonderbare Reis
- Niels Klim's journey under the ground / being a narrative of his wonderful descent to the subterranean lands; together with an account of the sensible animals and trees inhabiting the planet Nazar and the firmament.
- Nieuw Utopia
- Night of the Living Dead
- Nightmare on the nose
- Nightmare Planet
- Nightmare tower
- Niilo Klimin maanalainen matka
- Nine Men in Time
- Nine Unlikely Tales
- No Charge for Alterations
- No Great Magic
- No Hiding Place
- No Moving Parts
- No Pets Allowed
- No Shield from the Dead
- No Sons Left to Die!
- No star's land
- No Strings Attached
- No Substitutions
- No time for Toffee!
- No war tomorrow
- No-Risk Planet
- Noble Redman
- Nobody saw the ship
- Nomad
- Nor Dust Corrupt
- Nor Iron Bars a Cage....
- North Cornwall Fairies and Legends
- Not a Creature Was Stirring
- Not Fit for Children
- Not in the Rules
- Not in the Script
- Not Snow Nor Rain
- Nothing
- Nothing But the Best
- Nouvelles histoires extraordinaires
- Nouvelles mille et une nuits
- Novice
- Now We Are Three
- Null-ABC
- Nuova; or, The New Bee
- Näkymätön mies
- O Napoleão de Notting Hill
- O Oraculo do Passado, do presente e do Futuro (6/7) / Parte Sexta: O oraculo da Magica
- Oberheim (Voices): A Chronicle of War
- Oberon
- Occasion ... for Disaster
- Oesterreich im Jahre 2020: Socialpolitischer Roman
- Of All Possible Worlds
- Of Stegner's Folly
- Of Time and Texas
- Off Course
- Off on a Comet! a Journey through Planetary Space
- Off the Beam
- Office call
- Oh Mesmerist From Mimas!
- Oh, Rats!
- Old Farm Fairies: A Summer Campaign In Brownieland Against King Cobweaver's Pixies
- Old Friends Are the Best
- Old Mr. Wiley
- Old Rambling House
- Olga Romanoff
- Olympian Nights
- Omega, the Man
- Omnilingual
- On a lark to the planets / A sequel to "The wonderful electric elephant"
- On a Torn-Away World; Or, the Captives of the Great Earthquake
- On the Borderland
- On the Fourth Planet
- On the Lightship
- On the Trail of the Space Pirates
- Once a first wife
- Once a Greech
- Once on a Time
- Once Upon a Monbeast...
- Once Upon A Planet
- One Against the Moon
- One Against the Stars
- One for the Robot—Two for the Same
- One Man's Poison
- One Martian Afternoon
- One of Cleopatra's Nights and Other Fantastic Romances
- One of three
- One Purple Hope!
- One touch of Terra
- One Way
- One-Shot
- One-Way Ticket to Nowhere
- Oneness
- Oomphel in the Sky
- Open Invitation
- Operation Distress
- Operation Haystack
- Operation Interstellar
- Operation Lorelie
- Operation R.S.V.P.
- Operation Terror
- Operation: Outer Space
- Or Darwin, if you prefer
- Ordeal in Space
- Oridin's Formula
- Orphans of the Void
- Our coming world
- Our Town
- Our Young Aeroplane Scouts in Germany; or, Winning the Iron Cross
- Out Around Rigel
- Out of Mind
- Out of the Dark Nebula
- Out of the Earth
- Out of the Iron Womb!
- Out of the sea
- Out of This World
- Out of This World Convention
- Out of Time's Abyss
- Outcast of the Stars
- Outpost on Io
- Outside Saturn
- Outside the universe
- Over the border
- Overlord of Colony Eight
- Ozma of Oz / A Record of Her Adventures with Dorothy Gale of Kansas, the Yellow Hen, the Scarecrow, the Tin Woodman, Tiktok, the Cowardly Lion, and the Hungry Tiger; Besides Other Good People too Numerous to Mention Faithfully Recorded Herein
- Ozma of Oz / A Record of Her Adventures with Dorothy Gale of Kansas, the Yellow Hen, the Scarecrow, the Tin Woodman, Tiktok, the Cowardly Lion, and the Hungry Tiger; Besides Other Good People too Numerous to Mention Faithfully Recorded Herein
- Ozoplaning with the Wizard of Oz
- Ozymandias
- Pagan Passions
- Palimpsest
- Pandemic
- Pandora's Millions
- Pangborn's paradox
- Paradise Planet
- Pariah
- Pariah Planet
- Parking, unlimited
- Passage to Planet X
- Pastoral Affair
- Pattern for Conquest
- Peace
- Peacemaker
- Peggy's Giant
- Pellucidar
- Pen Pal
- People Minus X
- Per luchtschip "De Argonaut" naar Mars
- Perchance to Dream
- Perfect Answer
- Perfect Companion
- Perfect Control
- Peril of the Blue World
- Peril of the Starmen
- Peril Orbit
- Peter Merton's private mint
- Peter Pan in Kensington Gardens
- Peter Pan in Kensington Gardens
- Peter Pan in Kensington Gardens
- Peter Pettigrew's prisoner
- Peter Schlemihl
- Peter Schlemihl
- Peter Schlemihls wundersame Geschichte
- Peukaloisen retket villihanhien seurassa
- Phantastes: A Faerie Romance for Men and Women
- Phantom Duel
- Phantom of the Forest
- Phantom of the Seven Stars
- Phantom Out of Time
- Pharaoh's Broker / Being the Very Remarkable Experiences in Another World of Isidor Werner
- Phoenix
- Piccaninnies
- Piccolissima
- Pick a Crime
- Picture Bride
- Pictures Don't Lie
- Pied Piper of Mars
- Pietari Schlemihl'in eriskummalliset elämänvaiheet
- Pilgrims' project
- Pillar of Fire
- Pioneers
- Pioneers of space
- Pipe Dream
- Pipe of Peace
- Piper in the Woods
- Pirates of the Gorm
- Pirates of Venus
- Placebo
- Plague of Pythons
- Plague Ship
- Planet explorer
- Planet in Reverse
- Planet of Creation
- Planet of Doom
- Planet of Dread
- Planet of Dread
- Planet of Dreams
- Planet of No-Return
- Planet of Sand
- Planet of the Damned
- Planet of the Gods
- Plays of Near & Far
- Pleasant Journey
- Pledged to the Dead
- Pleiades Club—Telegraphers' Paradise on Planet Mars
- Plick y Plock
- Pogo Planet
- Point of Departure
- Poison Planet
- Poisoned Air
- Polaris and the Goddess Glorian
- Polaris of the Snows
- Police Your Planet
- Police!!!
- Policeman Bluejay
- Political Application
- Pollony Undiverted
- Portland, Oregon, A.D. 1999, and other sketches
- Postmark Ganymede
- Potemkin village
- Potential Enemy
- Prairie-Dog Town
- Preferred Position
- Preferred Risk
- Prelude to Space
- Pretty Quadroon
- Preview of Peril
- Prey of the Space Falcon
- Priestess of the Flame
- Prime Difference
- Prince Prigio
- Prince Prigio / From "His Own Fairy Book"
- Prince Ricardo of Pantouflia: Being the Adventures of Prince Prigio's Son
- Prince Vance: The Story of a Prince with a Court in His Box
- Princess of Chaos
- Princess White Flame
- Princo Vanc'
- Prinssi Keijujalka
- Printcrime
- Prison of a Billion Years
- Prison Planet
- Prisoner of the Brain-Mistress
- Prisoner of War
- Probability
- PRoblem
- Problem in solid
- Problem on Balak
- Problem Planet
- Prodigal Weapon
- Progress Report
- Project Hi-Psi
- Project Hush
- Project Mastodon
- Proktols of Neptune
- Proof of the Pudding
- Prospector's Special
- Proxy Planeteers
- Psichopath
- Psychotennis, Anyone?
- Publicity Stunt
- Puck of Pook's Hill
- Puck of Pook's Hill
- Puck of Pook's Hill
- Puck's Broom / The wonderful adventures of George Henry & his dog Alexander who went to seek their fortunes in the Once upon a time land
- Punainen rutto
- Puppet Government
- Purple Forever
- Pursuit
- Pushbutton War
- Puss in Boots, Jr., and the Good Gray Horse
- Pygmalion's Spectacles
- Pähkinänrusentaja ja hiirikuningas
- QRM-Interplanetary
- Queen of the Black Coast
- Queen of the Blue World
- Queen of the Flaming Diamond
- Queen of the Martian Catacombs
- Queen Zixi of Ix; Or, the Story of the Magic Cloak
- Quest of the Golden Ape
- Quest of Thig
- Quest on Io
- Quest on Phoebe
- Quest's End
- Quickie
- Quiet, Please
- Quinquepedalian
- R.U.R.
- R.U.R. (Rossum's Universal Robots) / A Fantastic Melodrama in Three Acts and an Epilogue
- Racconti fantastici
- Race Riot
- Rachel and the Seven Wonders
- Raiders Invisible
- Raiders of the Second Moon
- Raiders of the universes
- Rainbolt, the Ranger; or, The Aerial Demon of the Mountain
- Ralph 124C 41+: A Romance of the Year 2660
- Rastignac the Devil
- Rat in the Skull
- Rat Race
- Rattle of bones
- Rattle OK
- Rautakorko: Vallankumousromaani
- Reaching for the moon
- Reality Unlimited
- Rebels of the Red Planet
- Rebuttal
- Recalled to life
- Recoil
- Recruit for Andromeda
- Red Nails
- Red shadows
- Red Witch of Mercury
- Redcoat Captain: A Story of That Country
- Redemption
- Redevelopment
- Reel Life Films
- Regeneration
- Reign of the telepuppets
- Reise eines Erdbewohners in den Mars
- Reluctant Genius
- Remember me, Kama!
- Remember the 4th!
- Repeat Performance
- Requiem
- Rescue Mission
- Respectfully mine
- Resurrection
- Resurrection Seven
- Retief of the Red-Tape Mountain
- Return Engagement
- Return of a Legend
- Return to Earth
- Return to Pleasure Island
- Revenge
- Revenge of the Vera
- Revolt in the Ice Empire
- Revolt of the Brains
- Revolt of the Devil Star
- Revolt of the Outworlds
- Revolt on Io
- Revolt on the Earth-Star
- Revolution
- Rex Ex Machina
- Rhyme? and reason?
- Rhythm rides the rocket
- Ribbon in the sky
- Ricardo's Virus
- Ride the Crepe Ring
- Righteous plague
- Ring Once for Death
- Rinkitink in Oz
- Rinkitink in Oz / Wherein Is Recorded the Perilous Quest of Prince Inga of Pingaree and King Rinkitink in the Magical Isles That Lie Beyond the Borderland of Oz
- Rip Foster in Ride the Gray Planet
- Rip Foster Rides the Gray Planet
- Rip Van Winkle
- Ripeness is All
- Riya's Foundling
- Road Stop
- Roadtown
- Robinc
- Robot nemesis
- Robots of the World! Arise!
- Robur de Veroveraar
- Robur der Sieger
- Robur the Conqueror
- Robur, o Conquistador
- Robur-le-conquérant
- Rockabye, Grady
- Rocket Summer
- Rogue psi
- Rondah; or, thirty-three years in a star
- Rough Beast
- Round-about Rambles in Lands of Fact and Fancy
- Round-and-Round Trip
- Round-Up Time
- Routine for a Hornet
- Rumpty-Dudget's Tower: A Fairy Tale
- Run, Little Monster!
- Runaway
- Runaway
- Ruth's Marriage in Mars: A Scientific Novel
- Rx
- S.O.S. Aphrodite!
- Sabotage in Space
- Saboteur of Space
- Saknarth
- Sales Resistance
- Sales talk
- Saline Solution
- Salvage in Space
- Sam, This Is You
- Sand Doom
- Sandman's Goodnight Stories
- Sans dessus dessous
- Sargasso of Lost Starships
- Sargasso of the Stars
- Satan's garden
- Satellite of Death
- Satellite of Fear
- Satellite Passage
- Satellite System
- Satisfaction Guaranteed
- Satuja ja tarinoita I
- Savage Galahad
- Say "Hello" for Me
- Scanners live in vain
- Scent Makes a Difference
- Scientific Romances (First Series)
- Scorched Earth: A Future History of Planet Earth
- Scrambled World
- Scream at midnight
- Scrimshaw
- Scènes préhistoriques
- Sea curse
- Sea Legs
- Search the Sky
- Second census
- Second chance
- Second Childhood
- Second Landing
- Second Sight
- Second Sight
- Second stage Lensmen
- Second Variety
- Secret of the Earth Star
- Secret of the Martians
- Secret of the Painting
- Security
- Security
- Security
- Security Plan
- Security Risk
- Seed of the Arctic Ice
- Selections from the Writings of Lord Dunsany
- Self Portrait
- Seller of the Sky
- Selling Point
- Sense from Thought Divide
- Sense of Obligation
- Sentiment, Inc.
- Sentry of the Sky
- Service with a Smile
- Seven Little People and their Friends
- Seven-Day Terror
- Shadow of the Mothaship
- Shadows in the Moonlight
- Shadows in Zamboula
- Shamar's War
- Shandy
- Shango
- Shannach—The Last
- Shatter the Wall
- She
- She and Allan
- She Knew He Was Coming
- She who sleeps
- Shipping Clerk
- Shock Absorber
- Shock Treatment
- Show Business
- Shuddering castle
- Sidewinders From Sirius
- Sight Gag
- Sign of Life
- Signal Red
- Signs & Wonders
- Silence is—Deadly
- Simple psiman
- Singoalla
- Sinister Paradise
- Six Frightened Men
- Six giants and a griffin, and other stories
- Sjambak
- Skid Row Pilot
- Skin Game
- Skull-face
- Skulls in the stars
- Sky Island / Being the Further Exciting Adventures of Trot and Cap'n Bill After Their Visit to the Sea Fairies
- Sky Island / Being the further exciting adventures of Trot and Cap'n Bill after their visit to the sea fairies
- Skylark Three
- Slaughter on Dornell IV
- Slave of eternity
- Slave Planet
- Slaves of Mercury
- Slaves to the Metal Horde
- Slay-Ride
- Slingshot
- Slow Burn
- Small World
- Smarra ou les démons de la nuit: Songes romantiques
- Smugglers' Reef: A Rick Brant Science-Adventure Story
- Snowball
- So Many Worlds Away...
- Sodom and Gomorrah, Texas
- Solario the Tailor: His Tales of the Magic Doublet
- Soldier Boy
- Solid Solution
- Solomon's Orbit
- Someone Comes to Town, Someone Leaves Town
- Someone to watch over me
- Something about Eve: A comedy of fig-leaves
- Something Will Turn Up
- Song in a Minor Key
- Sonny
- Sordman the Protector
- Sorry: Wrong Dimension
- Sound of Terror
- South to Propontis
- Space Bat
- Space Blackout
- Space brat
- Space Oasis
- Space Platform
- Space Prison
- Space Station 1
- Space Tug
- Space Viking
- Space-Lane of No-Return
- Space-Liner X-87
- Space-Trap at Banya Tor
- Space-Wolf
- Spacehounds of IPC
- Spaceman on a Spree
- Spaceman's luck
- Spacemen Die at Home
- Spacemen lost
- Spacemen Never Die!
- Spacerogue
- Spacewrecked on Venus
- Spatial Delivery
- Spawn of the Comet
- Spawn of the Venus Sea
- Spawning Ground
- Special Delivery
- Special Delivery
- Special Delivery
- Specimen
- Specimens of German Romance; Vol. II. Master Flea
- Sphere of the Never-Dead
- Spider Men of Gharr
- Spielgeist: Eine Phantasie
- Spillthrough
- Spirits do return
- Spoilers of the Spaceways
- Spoken For
- Stairway to the Stars
- Stalemate
- Stalemate in Space
- Stamped Caution
- Stand by for Mars!
- Star Born
- Star bright
- Star chamber
- Star Hunter
- Star Mother
- Star of Panadur
- Star of Rebirth
- Star People
- Star Performer
- Star Pirate
- Star Ship
- Star Surgeon
- Star, Bright
- Star-Crossed Lover
- Starman's Quest
- Status Quo
- Stay off the Moon!
- Steel Giants of Chaos
- Stellar Showboat
- Stellar Vengeance
- Step IV
- Stop Look and Dig
- Stop, You're Killing Me!
- Stopover Planet
- Stopwatch on the world
- Stories of Enchantment
- Storm Cloud on Deka
- Storm Over Warlock
- Strange Exodus
- Stranger From Space
- Strangers to Straba
- Stroke of Genius
- Student Body
- Subjectivity
- Subspace Survivors
- Subversive
- Success Story
- Such Blooming Talk
- Sugar Plum
- Suicide Command
- Suite Mentale
- Sukelluslaivalla maapallon ympäri
- Summer Guests
- Summer Snow Storm
- Summit
- Sunfire!
- Supermind
- Survival
- Survival factor
- Survival Kit
- Survival of the fittest
- Survival Type
- Survivors
- Suzy
- Sweet Their Blood and Sticky
- Sweet Tooth
- Swenson, Dispatcher
- Sword of Fire
- Sword of the Seven Suns
- Swordsman of Lost Terra
- Sylvie and Bruno
- Sylvie and Bruno (Illustrated)
- Sylvie and Bruno Concluded (Illustrated)
- Symzonia: Voyage of Discovery
- Syndrome Johnny
- Synthetic Hero
- Sæfarinn (Ferðin kring um hnöttin neðansjávar)
- Tabby
- Taikapeili
- Take the Reason Prisoner
- Tales From the "Phantasus," etc. of Ludwig Tieck
- Tales of Fantasy and Fact
- Tales of Secret Egypt
- Tales of Space and Time
- Tales of terror
- Tales of the Caliph
- Tales of the supernatural: Six romantic stories
- Tales of the Unexpected
- Tales of Three Hemispheres
- Tales of Wonder
- Tanar of Pellucidar
- Tangle Hold
- Tape Jockey
- Tarrano the Conqueror
- Tarzan and the Ant Men
- Tarzan and the lost empire
- Tarzan at the Earth's core
- Tarzan the Terrible
- Task Mission
- Task of Kayin
- Task of Tau
- Task to Luna
- Tea Tray in the Sky
- Teams: A Terran Empire story
- Tedric
- Teen-age Super Science Stories
- Teething Ring
- Telempathy
- Temple Trouble
- Temptress of Planet Delight
- Ten From Infinity
- Tengerkisasszony: Vázlat, holdfényben
- Tepondicon
- Terror Out of Space
- Terror out of the past
- Test For the Pearl
- Test Problem
- Test Rocket!
- Texas Week
- Thakur-na: A Terran Empire story
- That Sweet Little Old Lady
- That worlds may live
- The 13th Immortal
- The 13th juror
- The 64-Square Madhouse
- The Aab
- The Abandoned Country; or, Frank Reade, Jr., Exploring a New Continent.
- The Abandoned of Yan
- The abysmal invaders
- The Addicts
- The Admiral's Caravan
- The Adventure of Two Dutch Dolls and a 'Golliwogg'
- The Adventurer
- The Adventures of A Brownie / As Told to My Child by Miss Mulock
- The Adventures of Diggeldy Dan
- The Adventures of Prince Lazybones, and Other Stories
- The Affair of the Brains
- The Age of Science: A Newspaper of the Twentieth Century
- The Aggravation of Elmer
- The Air of Castor Oil
- The Akkra case
- The Alembic Plot: A Terran Empire novel
- The Alien Dies at Dawn
- The alien intelligence
- The Aliens
- The Almost-Men
- The Amateurs
- The Amazing Mrs. Mimms
- The Ambassador
- The Ambassador's Pet
- The Ambassadors From Venus
- The Ambulance Made Two Trips
- The Android Kill
- The Angel of the Revolution: A Tale of the Coming Terror
- The Angels of Mons: The Bowmen and Other Legends of the War
- The Anglers of Arz
- The angry house
- The Animals' Rebellion
- The Answer
- The answer
- The artificial man
- The Asses of Balaam
- The Automatic Maid-of-All-Work: A Possible Tale of the Near Future
- The Automaton Ear, and Other Sketches
- The Autumn After Next
- The Avenger
- The Awakening
- The Back of Our Heads
- The Ball and the Cross
- The Ballad of Blaster Bill
- The Ballad of Venus Nell
- The band played on
- The Barbarians
- The Barbarians
- The Barrier
- The Battle of Dorking
- The Battle of the Bells
- The Beachcomber
- The beacon to elsewhere
- The beast of boredom
- The Beast of Space
- The Beast-Jewel of Mars
- The Beast-Jewel of Mars
- The Beasts in the Void
- The Beasts of Tarzan
- The Beautiful Eyes of Ysidria
- The Beautiful People
- The Bee-Man of Orn and Other Fanciful Tales
- The Beginning
- The belt
- The Berserker
- The Best Made Plans
- The Best of Fences
- The Betrothal / A Sequel to the Blue Bird; A Fairy Play in Five Acts and Eleven Scenes
- The Big Bounce
- The Big Engine
- The Big Fix
- The Big Fix!
- The Big Headache
- The Big Leap
- The Big Time
- The Big Tomorrow
- The Big Trip Up Yonder
- The Birds and the Bees
- The Birds of Lorrane
- The black alarm
- The black kiss
- The Black Star Passes
- The Black Tide
- The Blind Spot
- The Blindman's World / 1898
- The blonde from Barsoom
- The Bloodhounds of Zirth
- The Blue Behemoth
- The Blue Germ
- The Blue Ghost Mystery: A Rick Brant Science-Adventure Story
- The Blue Man / From "Mackinac And Lake Stories", 1899
- The Blue Moon
- The Blue Star
- The Blue Tower
- The Blue Venus
- The Bluff of the Hawk
- The Boats of the "Glen Carrig" / Being an account of their Adventures in the Strange places of the Earth, after the foundering of the good ship Glen Carrig through striking upon a hidden rock in the unknown seas to the Southward; as told by John Winterstraw, Gent., to his son James Winterstraw, in the year 1757, and by him committed very properly and legibly to manuscript
- The Bond of Black
- The Book
- The Book of Dragons
- The Book of Wonder
- The Bountiful Lady / Or, How Mary was changed from a very Miserable Little Girl to a very Happy One
- The Boy Apprenticed to an Enchanter
- The Boy Inventor's Wireless Triumph
- The Boy Volunteers with the Submarine Fleet
- The Boy Who Knew What the Birds Said
- The Brain
- The Brain Sinner
- The Bramble Bush
- The Brass Bottle
- The Brass Bottle: A Farcical Fantastic Play in Four Acts
- The Brave Walk Alone
- The Brick Moon, and Other Stories
- The Brides of Ool
- The Brown Owl: A Fairy Story
- The Brownies and Prince Florimel; Or, Brownieland, Fairyland, and Demonland
- The Bryd
- The Builders
- The Bunnikins-Bunnies and the Moon King
- The burning world
- The Burnt Planet
- The Business, As Usual
- The Butterfly Kiss
- The Buttoned Sky
- The call from beyond
- The call of Cthulhu
- The Calm Man
- The Candy Country
- The carnal god
- The Carnivore
- The Cartels Jungle
- The case of Charles Dexter Ward
- The Case of Summerfield
- The Castaway
- The Castle of Ehrenstein / Its Lords Spiritual and Temporal; Its Inhabitants Earthly and Unearthly
- The Cat in Grandfather's House
- The Catspaw
- The cave girl
- The Cavern of the Shining Ones
- The Caves of Fear: A Rick Brant Science-Adventure Story
- The celestial blueprint
- The Celestial Hammerlock
- The Certainty of a Future Life in Mars / Being the Posthumous Papers of Bradford Torrey Dodd
- The Chamber of Life
- The Chameleon Man
- The Chapter Ends
- The chariot of the sun
- The Chasers
- The Chasm
- The Chemically Pure Warriors
- The Chessmen of Mars
- The chronicles of Fairy land
- The Circuit Riders
- The Citadel of Death
- The Clean and Wholesome Land
- The Clockwork Man
- The Coffin Cure
- The Colonists
- The Colors of Space
- The colour out of space
- The comet-drivers
- The Coming of the Ice
- The Common Man
- The Conjurer of Venus
- The Connoisseur
- The Conquest of America: A Romance of Disaster and Victory, U.S.A., 1921 A.D.
- The Conquistadors Come
- The Consolidator; or, Memoirs of Sundry Transactions from the World in the Moon
- The Contact Point
- The Cool War
- The Copper-Clad World
- The corsair; or, the little fairy at the bottom of the sea
- The Cosmic Bluff
- The Cosmic Computer
- The Cosmic Courtship
- The Cosmic Deflector
- The Cosmic Derelict
- The Cosmic Express
- The Cosmic Junkman
- The Cosmic Looters
- The Cosmic Snare
- The cottage
- The Counterpane Fairy
- The Course of Logic
- The courts of Jamshyd
- The Cowardly Lion of Oz
- The Cozy Lion: As Told by Queen Crosspatch
- The Crack of Doom
- The Cream of the Jest: A comedy of evasions
- The Creature from Cleveland Depths
- The Creature Inside
- The Creatures That Time Forgot
- The Crock of Gold
- The Crowded Colony
- The Cruise of the Noah's Ark
- The Crystal Circe
- The Crystal Crypt
- The crystal planetoids
- The crystal ray
- The curse of Yig
- The Customs Lounge
- The Cyber and Justice Holmes
- The Cyberene
- The Dancers
- The Dangerous Scarecrow
- The Dark Door
- The Dark Goddess
- The Dark Other
- The Dawn of All
- The Day of the Boomer Dukes
- The Day of the Dog
- The Day Time Stopped Moving
- The Dead-Star Rover
- The Deadly Daughters
- The deadly ones
- The death crystal
- The Death From Orion
- The Death Ship: A Strange Story, Vol. 2 (of 3)
- The Death Ship: A Strange Story, Vol. 3 (of 3)
- The Death-Traps of FX-31
- The deep space scrolls
- The Defenders
- The Defiant Agents
- The Delegate from Venus
- The Demi-Urge
- The Derelict
- The Desert and the Stars
- The Destroyers
- The devil downstairs
- The Devil in Iron
- The Devil's Asteroid
- The Devolutionist and the Emancipatrix
- The Dictator
- The discovery of a world in the moone
- The Disembodied Man
- The Divers
- The Doom of London
- The Doomsman
- The Door in the Wall, and Other Stories
- The Door into Infinity
- The Door Through Space
- The Doorway
- The Dope on Mars
- The Double Life
- The Double Spy
- The downfall of Lancelot Biggs
- The Downhill Side of Thirty
- The Dragon Slayers
- The Dragon-Queen of Jupiter
- The Draw
- The Dream Coach
- The dream snake
- The Dream-God, or, A Singular Evolvement of Thought in Sleep
- The dream: A novel
- The Drivers
- The Drug
- The dryad
- The Dueling Machine
- The Dunwich horror
- The Dwindling Years
- The Eagles Gather
- The Earth Quarter
- The Earthman
- The eater of souls
- The Edge of the Knife
- The Eel
- The Ego Machine
- The Egyptian Cat Mystery: A Rick Brant Science-Adventure Story
- The Einstein See-Saw
- The Electronic Mind Reader: A Rick Brant Science-Adventure Story
- The Elixir of Life
- The Elroom
- The Elves of Mount Fern
- The Emancipatrix
- The Emerald City of Oz
- The Emerald City of Oz
- The Enchanted Castle
- The Enchanted Castle
- The Enchanted Crusade
- The Enchanted Island
- The Enchanted Island of Yew / Whereon Prince Marvel Encountered the High Ki of Twi and Other Surprising People
- The Enchanted Typewriter
- The End of Elfintown
- The End of Time
- The enemy
- The Engineer
- The English at the North Pole / Part I of the Adventures of Captain Hatteras
- The Enormous Room
- The Enormous Word
- The Envoy, Her
- The escape of Alice: A Christmas fantasy
- The eternal moment, and other stories
- The eternal savage
- The Eternal Wall
- The Ethic of the Assassin
- The Ethical Engineer
- The Ethical Way
- The Ethicators
- The Executioner
- The Expendables
- The Eye of Wilbur Mook
- The Eyes Have It
- The Eyes Have It
- The Eyes Have It
- The Eyes of Thar
- The Faces Outside
- The Facts of Life
- The Fairies and the Christmas Child
- The fairy babies
- The Fairy Latchkey
- The Fairy School of Castle Frank
- The Fall of Archy House
- The Fall of the House of Usher
- The Fastest Gun Dead
- The Fatal Third
- The Feather
- The Feeling
- The festival
- The Field of Clover
- The Field of Ice / Part II of the Adventures of Captain Hatteras
- The Fifth-Dimension Tube
- The Fifty-Fourth of July
- The Final Figure
- The Finding of Haldgren
- The Fire and the Sword
- The fire of Asshurbanipal
- The Fire People
- The Firelight Fairy Book
- The Firing Line
- The First
- The first American King
- The First Day of Spring
- The First Man on the Moon
- The First Men in the Moon
- The First Men in the Moon
- The First One
- The Fishdollar Affair
- The Five Hells of Orion
- The Five Jars
- The Fixed Period
- The fixer
- The Flame Breathers
- The Flaming Mountain: A Rick Brant Science-Adventure Story
- The Flight of the Eagle
- The Floater
- The Floating Island of Madness
- The Flower of Old Japan, and Other Poems
- The Flower Princess
- The Flying Cuspidors
- The Flying Stingaree: A Rick Brant Science-Adventure Story
- The Flying Tuskers of K'niik-K'naak
- The Food of the Gods and How It Came to Earth
- The Fool
- The Foreign Hand Tie
- The Forest Beyond the Woodlands: A Fairy Tale
- The Forgotten Planet
- The Four-Faced Visitors of Ezekiel
- The Fourth "R"
- The Fourth Invasion
- The Fox That Wanted Nine Golden Tails
- The Freelancer
- The Friendly Killers
- The Frightened Planet
- The Frightful Ones
- The Frogs of Mars
- The Frozen Planet
- The Fur Country: Or, Seventy Degrees North Latitude
- The Furious Rose
- The Futile Flight of John Arthur Benn
- The Galactic Ghost
- The Galaxy Primes
- The Galleon's Gold; or, Frank Reade, Jr.'s Deep Sea Search.
- The Gallery
- The Game of Rat and Dragon
- The Gay Rebellion
- The Geisha Memory
- The Genius
- The genius of Lancelot Biggs
- The Gentleman Who Vanished: A Psychological Phantasy
- The Gently Orbiting Blonde
- The Ghost in the Tower: An Episode in Jacobia
- The ghost of Charlotte Cray, and other stories
- The ghost of Lancelot Biggs
- The Ghost Pirates
- The Ghost Ship
- The Ghost: A Modern Fantasy
- The giant horse of Oz
- The Giants From Outer Space
- The Giants Return
- The Gift
- The Gift Bearer
- The giftie gien
- The Gifts of Asti
- The Girl Aviators and the Phantom Airship
- The girl from Bodies, Inc.
- The Girl from Infinite Smallness
- The girl from Samarcand
- The Girl in His Mind
- The Girl in the Golden Atom
- The Girls From Earth
- The Girls from Fieu Dayol
- The Glory of Ippling
- The Gnome King of Oz
- The gnome's gneiss
- The God in the Box
- The God Next Door
- The God-Plllnk
- The Goddess of Atvatabar / Being the history of the discovery of the interior world and conquest of Atvatabar
- The Gods of Mars
- The Gods of Mars
- The Gods of Pegana
- The Golden Book of Springfield
- The Golden Judge
- The Golden Skull: A Rick Brant Science-Adventure Story
- The Golden-Breasted Kootoo, and Other Stories
- The Golgotha Dancers
- The Good Neighbors
- The Good Seed
- The Good Wolf
- The Good Work
- The Governor of Glave
- The grandfathers' war
- The Grave of Solon Regh
- The Graveyard of Space
- The Gravity Business
- The Gray Nun
- The Great Dome on Mercury
- The Great Drought
- The Great Gray Plague
- The Great Green Blight
- The great illusion
- The Great Implication
- The Great Nebraska Sea
- The Great Potlatch Riots
- The Great Stone of Sardis
- The Great War in England in 1897
- The Great War of 189-: A Forecast
- The Great War Syndicate
- The Green Beret
- The Green Door
- The Green Dream
- The green girl
- The Green Millennium
- The Green Odyssey
- The Green World
- The Greylock: A Fairy Tale
- The grisly horror
- The Guardians
- The guest rites
- The Gun
- The Gun Runners
- The Hairy Ones
- The hairy ones shall dance
- The Hammer of Thor
- The Hampdenshire Wonder
- The Hand
- The Hands
- The Hanging Stranger
- The happiness rock
- The Happy Adventurers
- The Happy Castaway
- The Happy Clown
- The Happy Herd
- The Happy Hypocrite: A Fairy Tale for Tired Men
- The Happy Man
- The Happy Unfortunate
- The hate disease
- The Hated
- The haunted island
- The haunter of the dark
- The haunter of the ring
- The Heads of Apex
- The Hell Ship
- The hellflower
- The Helpful Hand of God
- The Helpful Robots
- The Hermit of Mars
- The Hero
- The high ones
- The High Place: A Comedy of Disenchantment
- The Highest Mountain
- The Highest Treason
- The Hills of Home
- The History of Caliph Vathek
- The Hohokam Dig
- The Holes and John Smith
- The Holes Around Mars
- The Hollow Land
- The Honored Prophet
- The Hoofer
- The horror at Red Hook
- The hounds of Tindalos
- The Hour of Battle
- The Hour of the Dragon
- The House from Nowhere
- The House of Arden: A Story for Children
- The house of joy
- The House of Souls
- The House of the Wolfings / A Tale of the House of the Wolfings and All the Kindreds of the Mark Written in Prose and in Verse
- The House on the Borderland
- The Huddlers
- The Huge Hunter; Or, The Steam Man of the Prairies
- The Human Element
- The Hungry Tiger of Oz
- The Hunted Heroes
- The Hunters
- The Hyborian Age
- The Iceberg Express
- The Ideal
- The Ignoble Savages
- The illustrated Tarzan book no. 1
- The Image and the Likeness
- The Imitation of Earth
- The Immortals
- The Impersonator
- The impossible invention
- The Impossible Pirate
- The Impossible Voyage Home
- The Impossibles
- The Incomplete Theft
- The incredible invasion
- The Incredible Life-Form
- The incredible slingshot bombs
- The Indulgence of Negu Mah
- The Infra-Medians
- The Inhabited
- The Inheritors
- The inner house
- The Inquisitor
- The Instant of Now
- The Intoxicated Ghost, and other stories
- The Invader
- The Invaders
- The Invaders
- The invading asteroid
- The Invasion
- The Invasion of 1910, with a full account of the siege of London
- The Invisible Enemy
- The Invisible Man: A Grotesque Romance
- The invisible master
- The iron heel
- The Iron Star — And What It Saw on Its Journey Through the Ages / From Myth to History
- The island of Doctor Moreau
- The Issahar Artifacts
- The Jameson Satellite
- The Jewel of Bas
- The Jewels of Aptor
- The Judas Valley
- The Junkmakers
- The Jupiter Weapon
- The K-Factor
- The Keeper
- The Kenzie Report
- The Killer
- The King in Yellow
- The King of Elfland's Daughter
- The King of Gee-Whiz
- The King of Ireland's Son
- The King of the City
- The King of the Golden River; or, the Black Brothers: A Legend of Stiria.
- The kingdom of the blind
- The Kings of the East: A Romance of the Near Future
- The Klygha
- The Knights of Arthur
- The Laboratorians
- The Lair of the White Worm
- The Lamps of the Angels
- The Land of Oz
- The Land of the Blue Flower
- The Land of the Changing Sun
- The Land That Time Forgot
- The Lani People
- The Last American / A Fragment from The Journal of Khan-li, Prince of Dimph-Yoo-Chur and Admiral in the Persian Navy
- The Last Brave Invader
- The Last Crusade
- The Last Days of L.A.
- The last days of the captain
- The last dragon
- The Last Evolution
- The Last Generation: A Story of the Future
- The Last Gentleman
- The Last Laugh
- The Last Letter
- The Last Man
- The Last Martian
- The Last Monster
- The Last Place on Earth
- The Last Plunge
- The last space ship
- The Last Trespasser
- The Last Two Alive!
- The Last Victory
- The laughing bear, and other stories
- The Laughing Mill, and Other Stories
- The laughter of Toffee
- The Leader
- The leaf
- The Leech
- The Legend of Monte della Sibilla; or, Le paradis de la reine Sibille
- The Legion of Lazarus
- The Life and Adventures of Peter Wilkins, Complete (Volumes 1 and 2)
- The Life and Adventures of Peter Wilkins, Volume 1 (of 2)
- The Life and Adventures of Peter Wilkins, Volume 2 (of 2)
- The life watch
- The life-eater
- The life-masters
- The Light Machine
- The Light Princess
- The Lightning's Course
- The Lights on Precipice Peak
- The Link
- The little elves seeking the beautiful world
- The Little Glass Man, and Other Stories
- The Little Green Goblin
- The Little House in the Fairy Wood
- The Little Lame Prince and His Travelling Cloak
- The Little Man Who Wasn't Quite
- The Little Match Man
- The Little Monsters Come
- The Little Pets of Arkkhan
- The Little Red Bag
- The Living Mummy
- The Log of the Flying Fish: A Story of Aerial and Submarine Peril and Adventure
- The Lonely
- The Lonely Ones
- The long question
- The Long Remembered Thunder
- The Long Voyage
- The Long Way
- The Long, Silvery Day
- The Longsnozzle Event
- The Lord of Death and the Queen of Life
- The Lorelei Death
- The Lost City
- The Lost Continent
- The Lost Door
- The Lost Ego
- The Lost Kafoozalum
- The Lost King of Oz
- The Lost Princess of Oz
- The Lost Princess of Oz
- The lost race
- The Lost Temples of Xantoos
- The Lost Tribes of Venus
- The Lost Warship
- The Lost World
- The Love of Frank Nineteen
- The love song of Lancelot Biggs
- The Luckiest Man in Denv
- The Luminous Blonde
- The Lunarian Professor and His Remarkable Revelations Concerning the Earth, the Moon and Mars / Together with An Account of the Cruise of the Sally Ann
- The lurking fear
- The Machine That Floats
- The Machine That Saved The World
- The Mad Planet
- The Madman From Earth
- The madness of Lancelot Biggs
- The Magic City
- The Magic Egg, and Other Stories
- The Magic Fishbone / A Holiday Romance from the Pen of Miss Alice Rainbird, Aged 7
- The Magic Nuts
- The Magic of Oz
- The Magic of Oz
- The Magic Soap Bubble
- The Magic World
- The Magical Land of Noom
- The Magical Mimics in Oz
- The Magician's Show Box, and Other Stories
- The magnificent possession
- The Mahatma and the Hare: A Dream Story
- The Man From Siykul
- The Man from Time
- The Man Higher Up
- The man on the meteor
- The Man Outside
- The Man the Martians Made
- The Man the Sun-Gods Made
- The Man the Tech-Men Made
- The Man Who Ended War
- The Man Who Flew
- The man who found out
- The Man Who Hated Mars
- The Man Who Killed the World
- The man who knew everything
- The man who liked lions
- The Man Who Made the World
- The man who mastered time
- The Man Who Played to Lose
- The Man Who Rocked the Earth
- The man who saved New York
- The Man Who Saved the Earth
- The Man Who Saw the Future
- The Man Who Staked the Stars
- The man who was pale
- The Man Who Was Six
- The man who wouldn't sign up
- The Man Whom the Trees Loved
- The man with the broken ear
- The Man With the Golden Eyes
- The Man-Wolf and Other Tales
- The Mania of the Nations on the Planet Mars and its Terrific Consequences / A Combination of Fun and Wisdom
- The Mannion Court-Martial
- The Marching Morons
- The Margenes
- The Mark of the Beast
- The Marooner
- The Marrying Man
- The marrying monster
- The Martian
- The Martian Cabal
- The Martian Circe
- The Martian Shore
- The Martians and the Coys
- The Marvellous History of the Shadowless Man, and The Cold Heart
- The Marvelous Land of Oz
- The Masked World
- The Master Key / An Electrical Fairy Tale Founded Upon the Mysteries of Electricity
- The Master Key / An Electrical Fairy Tale Founded Upon the Mysteries of Electricity
- The master mind of Mars
- The Master of the World
- The Mating of the Moons
- The Maugham Obsession
- The Measure of a Man
- The Medici Boots
- The Memory of Mars
- The Men in the Walls
- The Men of Boru
- The men return
- The Mercenaries
- The Merchants of Venus
- The Mercurian
- The Mermaid of Druid Lake, and Other Stories
- The Merman and the Figure-Head
- The Messiah of the Cylinder
- The metal horde
- The Metal Monster
- The Metal Moon
- The Mightiest Man
- The Mighty Dead
- The mill of silence
- The Mind Digger
- The Mind Master
- The miniature menace
- The minister had to wait
- The Minus Woman
- The mirrors of Tuzun Thune
- The Mischievous Typesetter
- The Miserly Robot
- The Misplaced Battleship
- The Missing Disclaimer
- The Missing Prince
- The missionary
- The Mississippi Saucer
- The Model of a Judge
- The Monster
- The Monster Maker
- The Monster Men
- The Monster That Threatened the Universe
- The Moon and the Sun
- The Moon Colony
- The Moon Destroyers
- The Moon is Green
- The Moon Maid
- The Moon Maid
- The Moon Maker
- The Moon Metal
- The Moon Pool
- The Moon Princess: A Fairy Tale
- The Moon-Voyage
- The Moons of Mars
- The Moralist
- The Most Horrible Story
- The Most Sentimental Man
- The Mouse and The Moonbeam
- The Mouthpiece of Zitu
- The mummy and Miss Nitocris : a phantasy of the fourth dimension
- The Mummy! A Tale of the Twenty-Second Century
- The Mummy's Foot
- The Music Master
- The Music Master of Babylon
- The Mysterious Island
- The Mysterious Island
- The Mysterious Shin Shira
- The Mysterious Stranger: A Romance
- The mystery of Deneb IV
- The Mystery of the Sea
- The Naiad: A ghost story
- The Napoleon of Notting Hill
- The Native Soil
- The Natives
- The Necklace of Princess Fiorimonde, and Other Stories
- The New Gulliver, and Other Stories
- The New-Year's Bargain
- The Next Logical Step
- The Next Time We Die
- The Night Has a Thousand Eyes
- The Night Land
- The Night of Hoggy Darn
- The night of no moon
- The Night of the Long Knives
- The Night of the Trolls
- The night wire
- The ninth vibration and other stories
- The nobles are coming
- The Nostalgia Gene
- The Nothing Equation
- The Obedient Servant
- The Observers
- The oddly elusive brunette
- The Odyssey of Sam Meecham
- The Old Die Rich
- The Old Goat
- The Old Martians
- The Old Ones
- The Old Way
- The One and the Many
- The Onslaught from Rigel
- The Open Door, and the Portrait. / Stories of the Seen and the Unseen.
- The Ordeal of Colonel Johns
- The ordeal of Lancelot Biggs
- The Other Likeness
- The Other Now
- The Outbreak of Peace
- The Outcasts of Solar III
- The Outer Quiet
- The overlord's thumb
- The Oversight
- The Pacifists
- The Panchronicon
- The Parasite: A Story
- The Passenger
- The Passing of Ku Sui
- The passionate pitchman
- The Patchwork Girl of Oz
- The Patchwork Girl of Oz
- The Patriot
- The Peacemaker
- The Penal Cluster
- The penultimate trump
- The People of the Black Circle
- The People of the Crater
- The People That Time Forgot
- The Perfect World: A romance of strange people and strange places
- The Perfectionists
- The perverse Erse
- The Phantom Ship
- The Phoenix and the Carpet
- The Pilot and the Bushman
- The Pioneer
- The Pirates of Ersatz
- The Pirates of Shan: A Rick Brant Science-Adventure Story
- The Pit of Nympthons
- The Place Where Chicago Was
- The Plagiarist From Rigel IV
- The Planet Mappers
- The Planet Mars and Its Inhabitants, a Psychic Revelation
- The Planet of Illusion
- The planet of shame
- The Planet Savers
- The Planet Strappers
- The Planet That Time Forgot
- The Planet with No Nightmare
- The Planetoid of Peril
- The Plattner Story, and Others
- The Players
- The Plotters
- The Pluto Lamp
- The Point of View
- The Poison Belt
- The Polite People of Pudibundia
- The Poniard's Hilt; Or, Karadeucq and Ronan. A Tale of Bagauders and Vagres
- The Poors
- The Portent and Other Stories
- The Premiere
- The price of eggs
- The Primus Curse
- The prince of space
- The Prince of the Pin Elves
- The Princess and Curdie
- The Princess and Curdie
- The Princess and the Goblin
- The Princess and the Goblin
- The Princess and the Physicist
- The Princess Nobody: A Tale of Fairyland
- The Prison of the Stars
- The Problem Makers
- The Professional Approach
- The programmed people
- The Prophetic Camera
- The Protector
- The Psilent Partner
- The Psychical Researcher's Tale - The Sceptical Poltergeist / From "The New Decameron", Volume III.
- The Psychological Regulator
- The Purcell Papers — Volume 2
- The Purchase of the North Pole / A sequel to "From the earth to the moon"
- The Pure Observers
- The Purple Cloud
- The Purple Pariah
- The Pursuit of the House-Boat
- The Pursuit of the House-Boat / Being Some Further Account of the Divers Doings of the Associated Shades, under the Leadership of Sherlock Holmes, Esq.
- The Push of a Finger
- The Putnam Tradition
- The Pygmy Planet
- The Quantum Jump
- The Queen of Space
- The Queen Who Flew: A Fairy Tale
- The Quest / The authorized translation from the Dutch of De kleine Johannes
- The quest of Iranon
- The Radiant Shell
- The Radio Beasts
- The Radio Boys Seek the Lost Atlantis
- The radio ghost
- The Radio Planet
- The radium pool
- The Rag and Bone Men
- The Raid of Dover: A Romance of the Reign of Woman, A.D. 1940
- The Raid on the Termites
- The Raider
- The Raiders of Saturn's Ring
- The railhead at Kysyl Khoto
- The Rainbow Book: Tales of Fun & Fancy
- The Rainbow Cat
- The Rat Race
- The Real Fairy Folk
- The Real Hard Sell
- The Real Thing
- The Rebel of Valkyr
- The recalcitrant
- The Record of Currupira
- The Recruit
- The Red Dust
- The red fetish
- The Red Hell of Jupiter
- The Red One
- The red planet
- The Reluctant Heroes
- The Reluctant Weapon
- The Repairman
- The Republic of the Future; or, Socialism a Reality
- The Rescue of the Princess Winsome: A Fairy Play for Old and Young
- The Return
- The Return
- The return of Lancelot Biggs
- The Return of Tharn
- The Revolt of Man
- The Revolt of the Star Men
- The Revolt on Venus
- The Revolutions of Time
- The right side of the tracks
- The Right Time
- The Risk Profession
- The Road to Oz
- The Road to Oz
- The road to Sinharat
- The Rocketeers Have Shaggy Ears
- The Romance of Golden Star ...
- The Romance of the Moon
- The Roots of the Mountains / Wherein Is Told Somewhat of the Lives of the Men of Burgdale, Their Friends, Their Neighbours, Their Foemen, and Their Fellows in Arms
- The Rose and the Ring
- The Rotifers
- The Royal Book of Oz / In which the Scarecrow goes to search for his family tree and discovers that he is the Long Lost Emperor of the Silver Island
- The Rumble and the Roar
- The Runaway Asteroid
- The Runaway Equator, and the Strange Adventures of a Little Boy in Pursuit of It
- The Runaway Skyscraper
- The Saint of the Dragon's Dale: A Fantastical Tale
- The Salem horror
- The Salesman
- The sane men of Satan
- The Santa Claus Brownies
- The Sargasso of Space
- The satellite-keeper's daughter
- The Scamperers
- The Scandalized Martians
- The Scapegoat
- The Scarecrow of Oz
- The Scarecrow of Oz
- The Scarlet Lake Mystery: A Rick Brant Science-Adventure Story
- The Scarlet Plague
- The scientific pioneer
- The scientific pioneer returns
- The Sea Fairies
- The Sea Fairies
- The sea girl
- The sea horror
- The Sea Lady
- The Second Deluge
- The Second Jungle Book
- The second shell
- The Second Voice
- The Secret Martians
- The Secret of Kralitz
- The Secret of the Earth
- The secret of the island
- The Secret of the League: The Story of a Social War
- The Secret of the Ninth Planet
- The Seed of the Toc-Toc Birds
- The Sense of Wonder
- The Sensitive Man
- The Sentimentalists
- The sentinel stars
- The Serapion Brethren, Vol. II
- The Serpent River
- The Servant Problem
- The Seven Champions of Christendom
- The Seven Jewels of Chamar
- The Seventh Order
- The Severed Hand / From "German Tales" Published by the American Publishers' Corporation
- The Sex Life of the Gods
- The shades of Toffee
- The shadow girl
- The shadow kingdom
- The shadow over Innsmouth
- The Shadow Witch
- The Shadow-Gods
- The Shaggy Man of Oz
- The Shakespeare garden club: A fantasy
- The Shaving of Shagpat; an Arabian entertainment — Complete
- The Shaving of Shagpat; an Arabian entertainment — Volume 1
- The Shaving of Shagpat; an Arabian entertainment — Volume 2
- The Shaving of Shagpat; an Arabian entertainment — Volume 3
- The Shaving of Shagpat; an Arabian entertainment — Volume 4
- The Shining Cow
- The Shipshape Miracle
- The Short Life
- The shrine
- The silent invaders
- The silver key
- The Silver Menace
- The Silver Plague
- The Silver Princess in Oz
- The Silver Stallion: A Comedy of Redemption
- The Singing Mouse Stories
- The Sinister Invasion
- The Six Fingers of Time
- The Skull
- The Sky Is Falling
- The Sky Trap
- The Skylark of Space
- The Skylark of Valeron
- The Slayer of Souls
- The Sleeper Awakes / A Revised Edition of When the Sleeper Wakes
- The Sling and the Stone
- The Slizzers
- The Sloths of Kruvny
- The small bears
- The Small World of M-75
- The smart ones
- The Smiler
- The Smoky God; Or, A Voyage to the Inner World
- The Snare
- The Snowball Effect
- The Snowbank Orbit
- The sociable ghost
- The sociable Sand Witch
- The Solar Magnet
- The Sons of Japheth
- The Soul Eaters
- The Soul Stealers
- The Space Between
- The Space Flame
- The Space Pioneers
- The Space Rover
- The space visitors
- The Sphere of Sleep
- The Spicy Sound of Success
- The spirit-rapper; an autobiography
- The Spy in the Elevator
- The stainless steel rat
- The stainless steel rat
- The Standardized Man
- The Star
- The Star Beast
- The Star Guardsman
- The Star Hyacinths
- The star jewels, and other wonders
- The Star Lord
- The Star Mouse
- The Star of Satan
- The Star-Master
- The Star-Sent Knaves
- The star-stealers
- The Starbusters
- The Starlight Wonder Book
- The starmen
- The Stars, My Brothers
- The statistomat pitch
- The Statue
- The Status Civilization
- The Stellar Legion
- The Stilled Patter
- The Stoker and the Stars
- The Stolen Bacillus and Other Incidents
- The story hunter
- The story of a sawdust doll
- The Story of Live Dolls
- The Story of the Amulet
- The Story of the Duchess of Cicogne and of Monsieur de Boulingrin / 1920
- The Story of the Glittering Plain / Which Has Been Also Called the Land of Living Men or the Acre of the Undying
- The Story of the Three Goblins
- The Story Without an End
- The Stowaway
- The strange people
- The Strange Story Book
- The strange transfiguration of Hannah Stubbs
- The Strange Voyage and Adventures of Domingo Gonsales, to the World in the Moon
- The Stranger
- The Street That Wasn't There
- The Stuff
- The Stutterer
- The Success Machine
- The Sun King
- The Sun-Death
- The Sundering Flood
- The Sunken Isthmus; or, Frank Reade, Jr., in the Yucatan Channel.
- The Surprising Adventures of the Magical Monarch of Mo and His People
- The swamp was upside down
- The Sweeper of Loray
- The Sword
- The Sword and the Atopen
- The Sword of Johnny Damokles
- The Sword of Welleran and Other Stories
- The Syndic
- The Tailor of Gloucester
- The Tale of Lal / A Fantasy
- The Talkative Tree
- The Talking Horse, and Other Tales
- The Tantalus Death
- The Tapestry Room: A Child's Romance
- The Telenizer
- The Temple of Earth
- The Terrible Answer
- The terror
- The Terror from the Depths
- The Terror Out of Space
- The terrors of the upper air
- The Test Colony
- The Thing from the Lake
- The Thing in the Attic
- The Thing in the Truck
- The Thing of Venus
- The thing on the door-step
- The Third Little Green Man
- The Thirst Quenchers
- The thought-feeders
- The Thought-Men of Mercury
- The Three Eyes
- The Three Impostors; or, The Transmutations
- The Three Perils of Man; or, War, Women, and Witchcraft, Vol. 2 (of 3)
- The Three Perils of Man; or, War, Women, and Witchcraft, Vol. 3 (of 3)
- The Three Thieves of Japetus
- The Threefold Destiny (From "Twice Told Tales")
- The Ties That Bind
- The Time Armada
- The Time Machine
- The Time Mirror
- The Time of Cold
- The Time Snatcher
- The Time Traders
- The time-raider
- The Time-Techs of Kra
- The Timeless Ones
- The Tin Woodman of Oz / A Faithful Story of the Astonishing Adventure Undertaken / by the Tin Woodman, assisted by Woot the Wanderer, the / Scarecrow of Oz, and Polychrome, the Rainbow's Daughter
- The Tin Woodman of Oz / A Faithful Story of the Astonishing Adventure Undertaken by the Tin Woodman, Assisted by Woot the Wanderer, the Scarecrow of Oz, and Polychrome, the Rainbow's Daughter
- The towers of Titan
- The Toy
- The Transient Lake; or, Frank Reade, Jr.'s Adventures in a Mysterious Country
- The Trap
- The trap
- The Treasure of the Isle of Mist
- The Troubadour
- The Trouble with Telstar
- The Trouble with Truth
- The Troublemakers
- The tunnel thru the air
- The Tunnel Under the World
- The twelve adventurers, and other stories
- The Ultimate Eve
- The Ultimate Image
- The Ultimate Quest
- The Ultimate Salient
- The Ultimate Weapon
- The Ultimate World
- The Ultroom Error
- The Un-Reconstructed Woman
- The Undamned
- The Underground City; Or, The Black Indies / (Sometimes Called The Child of the Cavern)
- The Undersea Tube
- The Undetected
- The universe wreckers
- The Universe — or Nothing
- The Unlearned
- The Unnecessary Man
- The Unprotected Species
- The unseen blushers
- The Unthinking Destroyer
- The untouchable adolescents
- The Unwilling Professor
- The Upside-Down Captain
- The Useless Bugbreeders
- The Valley
- The valley of eyes unseen
- The Valley of the Masters
- The Valor of Cappen Varra
- The Vanderlark
- The vanguard of Venus
- The Vanisher
- The vanishers
- The Vanishing Venusians
- The Variable Man
- The Vegans Were Curious
- The Velvet Glove
- The vengeance of Toffee
- The Venus Evil
- The Venus Trap
- The Very Black
- The Very Secret Agent
- The Vibration Wasps
- The Vicious Delinquents
- The Victor
- The Victory of Klon
- The Vilbar Party
- The Village of Hide and Seek
- The Village of Youth, and Other Fairy Tales
- The Virgin of Valkarion
- The Vizier of the Two-Horned Alexander
- The voice of the void
- The Vortex Blaster
- The vortex blaster makes war
- The Voyage of Vanishing Men
- The Wailing Asteroid
- The Wailing Octopus: A Rick Brant Science-Adventure Story
- The Wallet of Kai Lung
- The walls
- The Wallypug of Why
- The waning of a world
- The War in the Air
- The War of the Wenuses
- The War of the Worlds
- The War-Nymphs of Venus
- The Warlock of Sharrador
- The warlord of Mars
- The warriors
- The Watchers
- The Water Eater
- The Water of the Wondrous Isles
- The Water-Babies
- The Way Back
- The Way of Decision
- The way out
- The Weakling
- The Wealth of Echindul
- The Weapon From Eternity
- The Weather on Mercury
- The Wedge
- The Weird Adventures of Professor Delapine of the Sorbonne
- The Weirdest World
- The Well at the World's End: A Tale
- The wellsprings of space
- The Were-Wolf
- The Wheel is Death
- The Whispering Spheres
- The White Invaders
- The White Wolf and Other Fireside Tales
- The Willows
- The Wind People
- The windfairies, and other tales
- The Winds of Time
- The Winged Men of Orcon: A Complete Novelette
- The Winning of the Moon
- The Wishing Horse of Oz
- The Wishing-Stone Stories
- The Witch of Prague: A Fantastic Tale
- The wizard of light
- The Wolf Demon; or, The Queen of the Kanawha
- The Wolf-Leader
- The Wolf-Men: A Tale of Amazing Adventure in the Under-World
- The woman obsession
- The Woman Who Vowed (The Demetrian)
- The Women-Stealers of Thrayx
- The Wonder Clock; or, four & twenty marvellous Tales / being one for each hour of the day
- The Wonderful Bed
- The Wonderful Story of Ravalette
- The Wonderful Visit
- The Wonderful Wizard of Oz
- The Wood Beyond the World
- The world below
- The World Beyond
- The World Masters
- The World of Romance / being Contributions to The Oxford and Cambridge Magazine, 1856
- The World Peril of 1910
- The World Set Free
- The World That Couldn't Be
- The World with a Thousand Moons
- The world-mover
- The Worlds of If
- The Worlds of Joe Shannon
- The Worm Ouroboros: A Romance
- The Worshippers
- The wounded
- The Year When Stardust Fell
- The yes men of Venus
- The Yillian Way
- The York Problem
- The Young Lovell: A Romance
- The young naval captain
- Theodore Savage: A Story of the Past or the Future
- There was an old woman—
- There Will Be School Tomorrow
- They Also Serve
- They Reached for the Moon
- They return at evening
- They Twinkled Like Jewels
- They Were Different
- Thief of Mars
- Thin Edge
- Think Yourself to Death
- Third Planet
- Thirsty blades
- Thirty Degrees Cattywonkus
- This Crowded Earth
- This is Klon Calling
- This One Problem
- This star shall be free
- This Way to the Egress
- This World is Ours!
- This World Is Taboo
- This World Must Die!
- Thompson's Cat
- Thoth: A Romance
- Thralls of the Endless Night
- Three Good Giants / Whose Ancient Deeds are recorded in the Ancient Chronicles
- Three John Silence Stories
- Three More John Silence Stories
- Three Spacemen Left to Die!
- Threlkeld's Daughter
- Through Space to Mars; Or, the Longest Journey on Record
- Through the Air to the North Pole / Or, The Wonderful Cruise of the Electric Monarch
- Through the Asteroids—To Hell!
- Through the crater's rim
- Through the gates of the silver key
- Through time and space with Benedict Breadfruit
- Thunder in space
- Thunder in the void
- Thuvia, Maid of Mars
- Thuvia, Marsin neito
- Thy Name Is Woman
- Thy Rocks and Rills
- Ticket to the Stars
- Tickets to Paradise
- Tiger by the Tail
- Tik-Tok of Oz
- Tik-Tok of Oz
- Tillie
- Time and the Woman
- Time and Time Again
- Time Crime
- Time Enough at Last
- Time for survival
- Time Fuze
- Time Grabber
- Time In the Round
- Time out for redheads
- Time Payment
- Time Trap
- Timeline: A Terran Empire timeline
- Timotheus
- Ting-a-ling
- Tinker's Dam
- Title fight
- To Choke an Ocean
- To Each His Own
- To Each His Star
- To make a hero
- To Mars via the Moon: An Astronomical Story
- To Pay the Piper
- To Remember Charlie By
- To Save Earth
- To Sup With the Devil
- To the sons of tomorrow
- To Whom This May Come / 1898
- Today is Forever
- Toffee haunts a ghost
- Toffee turns the trick
- Tolliver's Orbit
- Tom Ossington's Ghost
- Tom Swift Among the Fire Fighters; Or, Battling with Flames from the Air
- Tom Swift and His Aerial Warship; Or, The Naval Terror of the Seas
- Tom Swift and His Air Glider; Or, Seeking the Platinum Treasure
- Tom Swift and His Air Scout; Or, Uncle Sam's Mastery of the Sky
- Tom Swift and his airline express
- Tom Swift and His Big Tunnel; Or, The Hidden City of the Andes
- Tom Swift and his chest of secrets
- Tom Swift and His Electric Locomotive; Or, Two Miles a Minute on the Rails
- Tom Swift and His Electric Runabout; Or, The Speediest Car on the Road
- Tom Swift and his flying boat;
- Tom Swift and His Giant Telescope
- Tom Swift and His Photo Telephone or the Picture That Saved a Fortune
- Tom Swift and his talking pictures
- Tom Swift and His War Tank; Or, Doing His Bit for Uncle Sam
- Tom Swift and the Electronic Hydrolung
- Tom Swift and The Visitor from Planet X
- Tom Swift in Captivity, Or, A Daring Escape By Airship
- Tomorrow the World!
- Tongues of the Moon
- Tonight the Stars Revolt!
- Tony and the Beetles
- Too close to the forest
- Too Many Eggs
- Top o' the World: A Once Upon a Time Tale
- Toppleton's Client; Or, A Spirit in Exile
- Total Recall
- Touch the sky
- Tourists to Terra
- Tourmalin's Time Cheques
- Toy Shop
- Traders Risk
- Transfer Point
- Traumerei
- Traveling Companion Wanted
- Travelogue
- Travels and Adventures of Little Baron Trump and His Wonderful Dog Bulger
- Treachery in Outer Space
- Tree, Spare that Woodman
- Trees Are Where You Find Them
- Triplanetary
- Triplanetary
- Trips to the Moon
- Trouble
- Trouble Near the Sun
- Trouble on Sun-side
- Trouble on Tycho
- Trouble Times Two
- Troubled star
- Try to remember!
- Tubemonkey
- Tuhatvuotinen valtakunta
- Tulan
- Turn backward, o time!
- Turning Point
- Turnover Point
- Twelve Stories and a Dream
- Twelve Times Zero
- Twenty Thousand Leagues under the Sea
- Twenty Thousand Leagues Under the Seas: An Underwater Tour of the World
- Twilight Land
- Twilight Land
- Twinkle and Chubbins: Their Astonishing Adventures in Nature-Fairyland
- Two Ghostly Mysteries / A Chapter in the History of a Tyrone Family; and the Murdered Cousin
- Two in a Zoo
- Two Plus Two Makes Crazy
- Two Thousand Miles Below
- Two Timer
- Two way destiny
- Two Weeks in August
- Two Whole Glorious Weeks
- Two worlds for one
- Tybalt
- Tydore's Gift
- Tyrants of Time
- Tähtimantteli: Sikermä
- Uller Uprising
- Ullr Uprising
- Ultima Thule
- Ultimatum
- Unbegotten Child
- Unborn Tomorrow
- Uncanny Stories
- Uncle Wiggily in Wonderland
- Uncle Wiggily on roller skates /
- Under Arctic Ice
- Under the Ocean to the South Pole; Or, the Strange Cruise of the Submarine Wonder
- Under the Skin
- Underground Man
- Underground Movement
- Uniform of a Man
- Unspecialist
- Untechnological Employment
- Unthinkable
- Until Life Do Us Part
- Unveiling a Parallel: A Romance
- Unwelcome Tenant
- Unwelcomed Visitor
- Unwise Child
- Up for Renewal
- Upstarts
- Urania
- Uranie
- Utazás a föld központja felé (1. rész)
- Utazás a föld központja felé (2. rész)
- Utazás a Holdba kilenczvenhét óra és husz percz alatt
- Valkyrie from the Void
- Valley of Dreams
- Valley of the Croen
- Vallisneria madness
- Vamiré: Romance dos tempos primitivos
- Vampires of Space
- Vandals of the Void
- Vanishing Point
- Varastettu basilli ja muita kertomuksia
- Vassals of the Lode-Star
- Vathek; An Arabian Tale
- Vengeance From the Past
- Vengeance on Mars!
- Venus Boy
- Venus Enslaved
- Venus Equilateral
- Venus Has Green Eyes
- Venus Hate
- Venus is a Man's World
- Venusian Invader
- Viaggj del Capitano Lemuel Gulliver in Diversi Paesi Lontani
- Victory
- Viewpoint
- Vigorish
- Viimeisellä hetkellä: Seikkailuromaani tulevaisilta ajoilta
- Viisi viikkoa ilmapallossa / Kolmen englantilaisen löytöretkiä Afrikassa
- Világ ura
- Világok harca
- Vingt mille lieues sous les mers
- Vingt mille Lieues Sous Les Mers — Complete
- Vingt Mille Lieues Sous Les Mers — Part 1
- Vingt Mille Lieues Sous Les Mers — Part 2
- Violet: A Fairy Story
- Virgin Ground
- Visible and Invisible
- Visionen und andere phantastische Erzählungen
- Vital Ingredient
- Vocation
- Volpla
- Voltaire's Romances, Complete in One Volume
- Vom Mars zur Erde
- Voodoo Planet
- Voyage au Centre de la Terre
- Voyage d'un Habitant de la Lune à Paris à la Fin du XVIIIe Siècle
- Voyage du Prince Fan-Federin dans la romancie
- Voyage To Eternity
- Voyage to Far N'jurd
- Voyage to Procyon
- Voyages du Capitaine Lemuel Gulliver, En Divers Pays Eloignes, Tome II de III
- Voyages to the Moon and the Sun
- Vulcan's Workshop
- Vuonna 2000: Katsaus vuoteen 1887
- Wagner, the Wehr-Wolf
- Wailing Wall
- Wainer
- Wait for Weight
- Wake (First 25,000 words)
- Wall of Crystal, Eye of Night
- Walls of Acid
- Wanderer of Infinity
- Wanderers of the Wolf-Moon
- Wandering ghosts
- Wanderlust
- Wandl the Invader
- Wanted: One Sane Man
- Wanted—7 Fearless Engineers!
- War Game
- War in Heaven
- War No. 81-Q
- War-Gods of the Void
- War-Lords of the Moon
- Warlord of Kor
- Warm
- Warning from the Stars
- Warrior of Two Worlds
- Warrior Race
- Warrior-Maid of Mars
- Waste Not, Want
- Watch (First 25,000 words)
- Watch the Sky
- Watchbird
- Way of a Rebel
- We
- We Didn't Do Anything Wrong, Hardly
- We Run From the Hunted!
- We're Civilized!
- We're Friends, Now
- We're Off to Mars!
- Weapon
- Wedding Day
- Weird Tales, Vol. 2 (of 2)
- Weird Tales. Vol. 1 (of 2)
- Welcome to Paradise
- Welcome, Martians!
- Welsh Rarebit Tales
- Werwile of the Crystal Crypt
- West o' Mars
- West of the sun
- Wet Magic
- What Do You Read?
- What Hath Me?
- What Inhabits Me?
- What Need of Man?
- What Not: A Prophetic Comedy
- What Shall It Profit?
- What The Left Hand Was Doing
- What's He Doing in There?
- Wheels Within
- When Day is Done
- When I Grow Up
- When Kohonnes Screamed
- When the atoms failed
- When the birds fly south
- When the Mountain Shook
- When the Sleeper Wakes
- When the Sleepers Woke
- When the Spoilers Came
- When the Sun went out
- When the World Shook / Being an Account of the Great Adventure of Bastin, Bickley and Arbuthnot
- When Time Rolled Back
- When Valmond Came to Pontiac: The Story of a Lost Napoleon. Complete
- When Valmond Came to Pontiac: The Story of a Lost Napoleon. Volume 1.
- When Whirlybirds Call
- When You Giffle...
- Where are you, Mr. Biggs?
- Where I Wasn't Going
- Where the Gods Decide
- Where the Phph Pebbles Go
- Where the World is Quiet
- Where There's Hope
- Whiskaboom
- White spot
- Who Goes There?
- William Gibson Interviewed
- Wind
- Wind in Her Hair
- Wings of the phoenix
- Wisdom's Daughter: The Life and Love Story of She-Who-Must-be-Obeyed
- Witch of the Demon Seas
- With Airship and Submarine: A Tale of Adventure
- With No Strings Attached
- With The Eyes Shut / 1898
- With the Night Mail: A Story of 2000 A.D. / (Together with extracts from the comtemporary magazine in which it appeared)
- With These Hands
- Within the nebula
- Within the Temple of Isis
- Witness
- Wizard
- Wolfbane
- Woman from another planet
- Woman's touch
- Woman's World
- Wonder-Box Tales
- World atavism
- World Beyond Pluto
- World Edge
- World in a Bottle
- World in a Mirror
- World of Mockery
- World of the Drone
- World of the Hunter
- World of the Mad
- World Without Glamor
- World Without War
- Worlds of the Imperium
- Wreck Off Triton
- Writing Class
- Wrong Analogy
- Wunderwelten / Wie Lord Flitmore eine seltsame Reise zu den Planeten unternimmt und durch einen Kometen in die Fixsternwelt entführt wird
- X Marks the Asteroid
- X Marks the Pedwalk
- Yachting Party
- Ye of Little Faith
- Year of the Big Thaw
- Yellow-Cap and Other Fairy-Stories For Children
- Yermah the Dorado: The story of a lost race
- Yesterday House
- Yesterday's Revenge
- Yhdenvertaisuus
- You Can't Buy Eternity!
- You can't scare me!
- You Don't Make Wine Like the Greeks Did
- You Don't Walk Alone
- You Too Can Be A Millionaire
- You'll Like It on Mars
- Young Man from Elsewhen
- Young Readers Science Fiction Stories
- Young Stowaways in Space
- Young Visitor to Mars
- Youngling: A Terran Empire story
- Your Servant, Sir
- Your Time is Up
- Youth
- Z
- Z-Day on Centauri
- Zehru of Xollar
- Zen
- Zeritsky's Law
- Zero Hour
- Zeta Exchange: A Terran Empire story
- Zoo mooi als zonneschijn. Het Kaarsemannetje
- Zurk
- Álomvilág: Elbeszélések
- Äärimmäiseltä rajalta
- Ægle and the elf, a fantasy
- Ĉe la koro de la tero
- Λουκιανός - Άπαντα, Τόμος Τρίτος
- —And Devious the Line of Duty
- 平妖傳
- 平妖傳
- 火星の記憶
- 牡丹亭
- 玉蟾記
- 鏡花緣