INDEX

• A
• Accra, Africa, 50
• Adamski, G., 16, 203, 204, 278
• Aerial Phenomena Group, U. S. Air Force, 2, 271, 272.
• See also ATIC
• Aerial Phenomena Research Organization (APRO), 181, 219, 235–36, 275, 278
• Aerospace Technical Intelligence Center (ATIC), 2, 271.
• See also ATIC
• After-image, 242
• Air Defense Command, 72, 94, 139, 160, 162, 166, 167
• Air Force, U. S., 2, 272–75;
• APRO challenge to, 235–36;
• conspiracy charges against, 69–70, 277–78.
• See also ATIC
• Air Force pilots, UFO sightings by, 70–72, 112, 113
• Akron, Ohio, 53, 280
• Alamogordo, N.M., 92
• Alaska, 60, 152
• Aldebaran, 253, 254
• Almirante Saldanha, 207 ff
• Aluminum foil, 164, 224, 225
• Alvarez, L. W., 139
• Amazing Stories magazine, 15, 16–21, 25
• American Airlines flights, UFOs reported from, 52, 68
• American Meteor Society, 88, 95, 111, 134, 135
• American Meteorite Museum, 102, 176
• Analyses of UFO “fragments,” 220, 231–34, 236
• Angel hair, 220–26;
• alleged origins of, 194, 221;
• arachnid, 220–24;
• industrial, 224
• “Angels” on radar, Pl. IVc;
• collision course of, 153–54;
• defined, 151;
• conditions producing, 157–60, 164, 170;
• moisture inversion and, 151, 158–60;
• possible causes of, 157–58;
• ring, 150, 165–66;
• temperature inversion and, 151–52, 158–60;
• UFO reports based on, 5–6, 71, 72, 151–52, 155–57, 161, 164–71, 182
• Ann Arbor, Mich., 241
• Antigravity, 195
• Aquarid meteors, 111, 134
• Armillaria mellea, 119
• Arnold, K., articles by, 15;
• Maury Island investigation by, 22;
• UFO sighting by, 13, 26, 28, 29
• Artificial gravitational field, 10, 193.
• See also G-field
• Artificial satellites, 45, 116, 172–73, 277, 288
• Asteroids, fragments of, 90
• ATIC, UFO investigations by, 5, 38, 46, 54, 68, 70, 72, 76, 80, 106, 108, 113, 126, 131, 135, 136, 141, 163, 169, 176, 182, 185, 224, 236, 239, 241, 245, 247, 254, 281;
• resources of, 272–73;
• responsibility of, 271–75
• Atlantis, 10, 17, 18
• Aurora Borealis, radar echoes from, 164
• B
• Ball lightning, 176–80, Pl. Vb;
• theory of, 178;
• USSR reports of, 178
• Balloon, pibal, 40;
• radiosonde, 39–40, 163;
• Skyhook, 31–33, 38, 49;
• toy, 56
• Balloons, burst, 48, 50;
• clusters of, 41;
• dogfight among, 47;
• dogfight with, 42–44, 77–79;
• shapes of, 32, 40–41;
• UFO reports based on, 33–39, 42–44, 46, 47, 48, 80, 82
• Barauna, A., 208 ff
• Barker, G., 24
• Bellefontaine, Ohio, 162
• Berkner, L. V., 139
• Bethurum, T., 16, 201
• Biot, J. B., 89, 289
• Birds, light reflected from, 122, 125, 127, 130–32;
• luminous, 118, 127;
• migrations of, 127;
• radar echoes from, 164–66;
• UFO reports based on, 122–27, 130–32
• Blip, defined, 5
• Boulder, Colo., 249, Pl. VIIa
• Brazil, UFOs reported from, 184, 206, 207, 231–34, 236
• Bubbles, UFO reports based on, 57, 58
• Bubbles of air, angels produced by, 151
• C
• Capella, UFO reports based on, 161, 170–71, 253–54
• Carbon 14, 221
• Central Intelligence Agency, 70, 139, 278
• Chant, C. A., 107
• Chemical analysis, of meteorites, 90, 98;
• of Moon Bridge, 230;
• of pancakes, 227–48;
• of saucer fragments, 232–34, 236
• Chesapeake Bay, Va., UFOs reported over, 256–65
• Chiles, C. S., 108 ff
• Chiles-Whitted sighting, 108–13
• Cigar shape, 7, 95, 109, 243, 253
• Cincinnati, Ohio, 67, 224
• Civilian investigators of UFOs, 186, 275–78
• Civilian Research Interplanetary Flying Objects (CRIFO), 67
• Civilian scientists, panel of, 138–43;
• report of, 142
• “Classic” UFO, defined, 33
• Clouds, grindstone, 26, Pl. Ia;
• ice crystals in, 71, 164, 244, 247;
• orographic, 26;
• searchlights on, 263, 266, 283–85;
• “stack of plates,” 26, Pl. Ib;
• wave, 26–29
• Clubs, flying saucer, 275–76
• Coast Guard station, UFO photographed from, 122, Pl. IVa
• Coburn, Va., 224
• Coincidence, role of in UFO sightings, 238–39
• Coleman, W. T., 132, 252
• Collision course, apparent, 60, 104, 106, 109, 113
• Color, of meteors, 97–98;
• of UFOs, 7
• Comet, BOAC, 276
• Comet Biela, 92
• Comets, discovery of, 103;
• meteors associated with, 90;
• remnants of, 90, 98
• Condensation trail, 50
• Congress, U. S., 69
• Congressional inquiry, requests for, 227, 277–78, 279
• Conspiracy, allegations of, 11, 69–70, 276, 277
• Contact stories, pattern of, 199–200
• Contactees, 199–205, 277
• Control by intelligence, apparent, 42, 60, 61, 80, 104, 110, 259
• Copper in meteors, 98
• Cosmic rays, power from, 10, 193
• Coy, Cindy, 138
• Cramp, L. G., 16
• Craters, meteor, 100
• Crisman, F. L., 21, 22
• Cults, flying saucer, 108, 199, 201–2, 275–76
• Curaçao, N.W.I., 57, Pl. IIa
• D
• Dahl, H. A., 21
• Danby, Calif., 243
• Day the Earth Stood Still, UFO pictured in, 133
• Defense, national, 147, 237, 271
• Deflection, of radar beams, 151;
• of starlight, 194
• Dero, 18, 19, 22, 25
• Discoverer VIII, 277
• Disk shape, of meteors, 95, 99, 101;
• of UFOs, 7, 13, 140, 280
• Disks, flying, 13.
• See also UFO
• Distance, difficulty of estimating, 14, 41, 54, 81, 105–6, 110, 131, 180, 260–61
• Dogfight, balloons engaged in, 47;
• Gorman, 77–85;
• Guantánamo Bay, 42–44
• Draconid meteors, 101
• Dracula’s Daughter, 282, 283
• Ducting conditions, 6
• Duluth, Minn., 72
• Duplicity, charges of, 283–84, 287
• E
• Eagle River, Wis., 226
• Early Warning System, 139, 158, 166
• Earth, doughnut-shaped, 25
• Eastern Airlines flights, UFOs reported from, 109–10, 250
• Echo machine, radar as, 147–48
• Echo satellite, 45
• Echoes, radar. See Angels
• Einstein, Albert, 18, 191, 195
• Electrical appliances, E-M interference with, 173, 184, 186–87;
• meteor interference with, 185, 189
• Electromagnetic (E-M) effects, NICAP study of, 186–88
• Electromagnetic force, 172–75, 188
• Electromagnetic phenomena, reports of, 173, 181, 184–87
• Ellsworth Air Force Base, 167
• England, blue rain in, 234;
• invisible UFOs in, 165
• Eureka, Utah, 189
• Evidence, nature of, 4–6
• Extraterrestrial beings, possible communication with, 3, 216–17
• Extraterrestrial visitors, alleged signals from, 11, 165;
• appearance of, 200, 201;
• languages used by, 183, 200, 203;
• reported contact with, 183–84, 186, 199–200, 203–4
• F
• Fallacies about meteors, 96–97
• False targets on radar. See Angels
• Farmington, N.M., 48–49
• Fate magazine, 15, 16, 22
• Fear of the unknown, 121–23
• Film, UFOs found on, 247–50, Pls. VIIb, VIIIa, VIIIb
• Fireball, of Sept. 18, 1954, 92–93;
• “Sunshine,” 135
• Fireballs, 103–6;
• clusters of, 104–7;
• conference on, 94;
• green, 92–95, 97, 98;
• official records of, 88–89, 95–96, 99;
• slow, 92, 99, 107–8
• Fitzgerald sighting, 279–88
• Flower and Cook Observatory, 111
• Flying bird cage, 241–42
• Flying egg, 175, 181–82, 184
• Flying hubcap, 205
• Flying saucer, clubs, 275–76;
• defined, 2;
• first report of, 13.
• See also UFO
• Flying Saucers magazine, 24–25, 227, 276
• Foo balls, 73
• Force field, 172, 190, 191, 221
• Fort, C., 1, 2, 3, 10, 16, 18, 20
• Fort Itaipu, Brazil, 173, 184
• Fort Pierce, Fla., 250
• Fortenberry, W. H., 256, 258, 259
• Fragments of alleged UFOs, 23, 219–20, 230, 231–33, 235–36
• France, angel hair reported in, 220–22;
• UFO photographed in, 123, Pl. IVb
• Fraud, in contact stories, 202
• Friction, atmospheric, 194
• Friend, R. J., 127
• Fry, D. W., 200
• G
• Gainesville, Fla., 51
• Galileo, 191, 192, 276
• Geminid meteors, 6, 98, 101
• G-field, plane crash attributed to, 154;
• propulsion by, 190, 193;
• theory of, 190–95
• G-field beam, reversed, 154
• Ghosts, radar. See Angels
• Godman Air Force Base, 33–39
• Gorman, G. F., UFO sighting by, 77–80
• Gossamer, 220.
• See also Angel hair
• Goudsmit, S. A., 139
• Gravity, force of, 18, 195–96;
• law of, 195;
• negative, 195;
• self-contained, 202;
• shield for, 194–95
• Green fireballs, 92–95, 97, 98;
• Los Alamos conference on, 94
• Greenland, phantom targets in, 166
• Griffis Air Force Base, 68
• Guantánamo Bay, Cuba, 42–44
• Gulf of Mexico, 5–6, 182
• Gulliver, L., 172
• H
• Hamilton Air Force Base, 46
• Hanford, Wash., 135
• Harvard College Observatory, 111, 113, 175
• Height-finding radar, 153, 156, 162, 163
• Herget, P., 67
• Hermanas, N.M., 47
• Hidden World, 25
• Hoax, Ilha dos Amores, 206;
• Maury Island, 21–23;
• Schmidt, 183;
• Scoutmaster, 136–37;
• Shaver, 17–21
• Hoaxes, 198–99, 219;
• photographic, 203–7, Pls. VIa, VIb, 213–16;
• UFO, 199
• Humidity, inversions of, 151, 157–58
• Hynek, J. A., 37, 108, 111, 113, 127, 141, 273
• I
• Ice crystals, radar echoes from, 71, 164;
• sundogs from, 244, 247
• Ices, vaporizing, 94
• Icy cometoid, 90, 98, 101
• Ilha dos Amores, 206
• Inertia, law of, 194–95
• Inference, distinguished from observation, 5–6, 74;
• limitations of, 4–5
• Insects, radar echoes from, 164–65
• Institute of Meteoritics, 93, 102, 175
• Intelligence, apparent control of UFOs by, 61, 80, 110, 168, 259
• Intercontinental ballistic missiles, meteors as possible, 105;
• radar angels as possible, 166
• Interplanetary travel, 19, 77–78, 216–17.
• See also Spacecraft
• Inversions, moisture, 157–58;
• temperature, 65, 253–54, 269
• Investigations, Congressional, 227, 277–78, 279
• Investigators, Air Force, 271–75;
• civilian, 275–77
• Invisible UFOs, reports of, 145, 152, 155, 165, 193, 202
• Ionization, defined, 194;
• angel hair produced by, 221;
• radio interference by, 92, 178, 185, 187, 189
• J
• James, R. L., 152, 156
• Japan, UFOs reported from, 73–75
• Jessup, M. K., 10, 16
• Jet planes, UFO reports based on, 50, 51, 52–56, 251
• Johannesburg, South Africa, 51
• Jupiter, mirages of, 81–85, 141–42;
• seen through jet trail, 85–86
• K
• Kearney, Nebr., 183
• Kentucky, UFO over, 58, Pl. IIb
• Keyhoe, D. E., 10, 16, 69, 159, 276, 277
• Killian case, 52–56
• Kinross case, 154
• Kites, UFO reports based on, 56–57, Pl. IIa
• Korea, UFO reports from, 73–75
• Khrushchev, 166, 235
• Kuiper, G. P., 230
• L
• “Landings” of spacecraft, 180, 183–85, 203–4, 239
• La Paz, L., 93, 102, 175
• Laputa, 172
• Las Cruces, N.M., 267
• Lemuria, 10, 17, 18, 200
• Lens, defects in photographic, 123, 248, Pls. VIIIa, VIIIb;
• of air, 63, 83, 255
• Leonid meteors, 90, 92
• Levelland, Tex., UFOs, 174–76, 179
• Liddell, U., 31
• Life magazine, 95, 129, 134, 259, 268
• Life, possibility of extraterrestrial, 4, 216–17, 269
• Light, deflection of, 194;
• refraction of, 63–66;
• velocity of, 19, 150
• Lightning, ball, 176–80, Pl. Vb;
• pinched, 177, Pl. Va;
• types of, 177
• Lights, Lubbock, 123–27;
• reflections of, 127;
• unfamiliar, 52–56, 240–41, 250–52;
• rotating, 73–75
• Lincoln, Nebr., 178
• “Little Men,” 199, 220
• Lock Raven Dam, 180
• Logical defect, in UFO beliefs, 143
• Look magazine, 134, 210, 259
• Lorenzen, C., 181, 235, 236
• Los Alamos, N.M., 177;
• conference on fireballs, 94
• Lubbock lights, 123–27
• Luminosity, of birds, 118–27;
• of fungi, 119–20;
• of meteors, 99–100, 106–7
• M
• Magnesium, in meteors, 98;
• in UFO fragments, 236
• Magnetic field, 172, 192
• Magnetic force, island propelled by, 172;
• UFOs attached by, 49
• Magnetic lines of force, plane crash attributed to, 192–93
• Magnetism, 18, 172–73, 192, 195–96
• Maney, C. A., 260
• Manhattan Beach, Calif., 49
• Mantell case, 33–39, 192, 247
• Mars, as space base, 76;
• comfort-loving creatures on, 216;
• mirages of, 76, 253;
• opposition of, 76;
• possibility of intelligent life on, 269;
• spaceship orbit from, 77–78
• Marysville, Ohio, 222
• Maury Island hoax, 21–23
• Menger, H., 202
• Menzel, D. H., 73, 92, 95, 175, 210, 230, 245, 249, 254
• Meteor processions, 107–8
• Meteor showers, 90–93, 111, 134;
• dates of, 91
• Meteor trail, luminous, 88, 92, 96, 100, 107;
• photograph of, 99, Pl. IIIa
• Meteorites, composition of, 90, 98, 101;
• recovery of, 101–3
• Meteoritics, meteors recorded in, 88–89, 95–96, 99
• Meteors, colors of, 97–98;
• exploding, 96, 100, 104, 230, 236;
• false beliefs about, 96–97;
• formations of, 104, 106–7;
• luminosity of, 99–100, 106–7;
• numbers seen, 111, 134, 135;
• odors from, 89;
• paths of, 98–99, Pl. IIIa;
• radio and TV interference by, 185, 187, 189;
• sounds made by, 96, 100–1;
• spectra of, 94, 97–98;
• structure of, 98, 100–1;
• UFO reports based on, 88, 108–13, 185, 239–40;
• velocity of, 93, 98, 106
• Michel, A., 10, 16
• Mirage, of Chicago skyline, 254;
• of mountain peaks, 26–27;
• on gun-barrel highway, 254–55
• Mirages, causes of, 63–66, 255;
• of planets, 66–67, 81–85, 141–42, 253;
• of stars, 60–62, 161, 170–71, 253–54;
• on radar, 151–52
• Missiles, UFOs interpreted as, 93–95, 166, 231
• Mock sun, 38, 244–47
• Moisture, inversions of, 151, 157–58
• Monster, New Jersey, 198;
• West Virginia, 137–38
• Moon, hidden side of, 203;
• inhabitants of, 202–3;
• planet hidden by, 201;
• radar echoes from, 164, 166, 167;
• UFO base on, 228;
• underground cities on, 228
• Moon Bridge, 228–30;
• spectrographic analysis of, 230
• Moonwatch, 190, 228
• Moore, O., 185
• Mother ship, 115, 199, 201
• Mu, 18
• Mummified men, 219
• Murray, Ky., 96
• Mushrooms, luminous, 119–20;
• odor of, 120
• Myth, G-field, 193–95
• N
• Nash, W. B., 256, 257, 258, 259, 260, 262, 264
• Nash-Fortenberry case, 256–65
• National Investigations Committee on Aerial Phenomena (NICAP), 45, 276–78.
• See also NICAP
• Negative gravity, 195
• New Haven, Conn., 231
• New Mexico, green fireballs in, 92, 93–95
• Newton, Isaac, 18, 191, 194, 195
• NICAP, E-M effects studied by, 186–88;
• membership of, 277;
• pancakes studied by, 226–28;
• Ryan case studied by, 69–70
• Nike site, UFO reported from, 239
• Nininger, H. H., 102, 176
• Norfolk, luminous owls of, 118–19
• Norton County, Kansas, meteor fall at, 102–3
• Norway, 248, Pl. VIIb
• O
• Odessa, Wash., 62
• Office of Scientific Intelligence, 139, 142, 143
• Olivier, C. P., 95
• Orbit of Martian spaceship, 77–78
• Orogrande, N.M., 181
• Owls, luminous, 118–19
• Ozma, Project, 216–17
• P
• Pacific ocean, 105–6
• Page, T. W., 139, 287
• Palmer, R. A., 15–21, 23, 26, 227
• Pan American Airlines flights, UFOs reported from, 103, 104–6, 256
• Pancakes, extraterrestrial, 226–28
• Panel of civilian scientists, 138–43;
• report of, 142
• Panic, growth of 1952, 133–35;
• growth of 1957, 174–76
• Paracelsus, 172
• Parallel universes, 9
• Pelicans, UFO report based on, 130
• Perseid meteors, 98, 111, 134
• Phantoms, radar. See Angels
• Phosphorescent organisms, 119–20
• Photographs, UFOs in, 122, 130–32, 205–7, 248;
• by gun-camera, 162–63, 168, 170
• Photography, trick, 205, 209, 212, 215
• Pibal, 40, 46
• Pile d’assiettes, 26, Pl. Ib
• Pilots, UFOs reported by, 70, 92, 103–6, 109–10, 250, 256
• Pinched lightning, 177, Pl. Va
• Plane crashes attributed to UFOs, 11, 23, 35, 154, 192, 276
• Planets, extra-solar, 10, 217;
• mirages of, 66–76, 81–85, 141–42, 253
• Plank, V. G., 158
• Plato, 18
• Port Huron, Mich., 160
• Presque Isle, Me., 139
• Probability, methods of, 187–88
• Project Ozma, 216
• Project Twinkle, 94
• Propulsion, theories of UFO, 190–93
• Publications, UFO, 67, 275–76
• Puerto Rico fireball, 99, Pl. IIIb
• R
• Radar, as reporter, 145–47;
• experiments in, 152–53, 157–60;
• principle of, 147–50;
• ring angels on, 165–66
• Radar echoes, from ice crystals, 71, 164;
• from moon, 164, 167;
• interpretation of, 145–47;
• possible sources of, 164.
• See also Angels
• Radarscope, mechanism of, 146
• Radar-visual UFOs, 160–63, 167–71
• Radio astronomy, 216
• Radio noise from space, 217
• Radio-TV failures, 181, 184–87
• Radio waves, behavior of, 153;
• scatter of, 153, 164;
• secondary reflection of, 154, 158;
• velocity of, 150
• Radioactivity, 35, 80, 137, 172, 185
• Radiosonde, 39–40, 163
• Rain, blue, 234;
• silver, 231–34
• Rapid City, S.D., 167–70
• Red Bluff, Calif., 253
• Reflections, multiple, 263, 266;
• UFOs from, 242–44, 248, 249–50, Pls. VIIa, VIIb
• Refraction, atmospheric, 63–66, 269;
• of radar beams, 158–60
• Refractive index, 159, 160
• Rheims, France, 245
• Ring angels, 156, 165–66
• Robertson, H. P., 139
• Robins Air Force Base, 112
• Rocket, reported as UFO, 44–45
• Rosalia, Wash., 46
• Rotating lights of Japan, 73–75
• Ruppelt, E. J., 126, 127, 133, 167
• Russia, ball lightning in, 178
• Ryan case, 68–70
• S
• Salina, Kans., 164, Pl. IVc
• Salt Lake City, Utah, 245–47
• Samford, J. A., 157
• Satellites, artificial, 116, 172, 173, 277;
• natural, 108
• Saturn, visitors from, 183, 186, 200, 203
• Saturn-like UFOs, 7, 206, 207, 214
• Saucer. See UFO
• Saucerdom, myths of, 10–11, 193–95
• Scatter of radar beams, 164, 170–71
• Schilling Air Force Base, 164, Pl. IVc
• Schmidt, R., 183
• Science, methods of, 3, 289
• Science fiction, 1, 9, 17, 19, 23–25, 200
• Scientists, views on UFOs, 139, 142, 143, 215, 269–70, 287
• Scoutmaster, UFO reported by, 136
• Scully, F., 16
• Sea gulls, UFO reports based on, 121–22, 130–32, 213
• Searchlights on clouds, 263, 266, 283, 285
• Sebago, U. S. Coast Guard cutter, 182
• Sebree, Ky., 223
• Secondary reflection of radar beam, 154, 158
• Secrecy, alleged Air Force, 37, 69–70, 154, 157, 283;
• alleged government, 202
• Security, national, 147, 271, 275, 289
• Shapes of UFOs, 7–8, 206–7
• Shaver hoax, 17–21, 25
• Sheep Rock saucer, 224
• Sheffield Lake, Ohio, 279
• Siberian meteor of 1908, 100, 101
• Silver iodide, 225
• Silver rain, 231–34
• “Simultaneous” radar-visual UFO sightings, 5–6, 72, 160–63, 167–71, 182
• Sirius, mirages of, 61–63
• Size, difficulty of estimating UFO, 14, 54, 131, 181, 260
• Skyhooks, 31–33
• Smithsonian Astrophysical Observatory, 57, 99, 175, 273
• Sound, associated with meteors, 96, 100–1;
• associated with UFOs, 7, 193;
• velocity of, 147
• Spacecraft, bases for, 228;
• “landings” by, 183–85, 203–4, 239;
• motive power of, 192–93;
• occupants of, 183, 199, 200, 203, 220, 226;
• signals from, 11, 165;
• theories about, 10–11, 190–95
• Spectra of meteors, 94, 97–98
• Spiders, angel hair produced by, 220–24
• Sputnik II, 116, 173
• St. Elmo’s fire, 176
• Stack, formations, 49, 257, 265–66;
• of coins, 49;
• of plates, 26
• Stars, hypothetical planets of, 10, 216
• Statistical summaries of UFO cases, 274
• Stones from heaven, 89, 289
• Sundogs, 38, 244–47
• Superrefractive conditions, 159
• Sutton, W. Va., monster, 137
• Sylacauga, Ala., meteorite, 88, 230
• T
• Tacker, L. J., 235, 236
• Taormina, Sicily, 205, Pl. VIa
• Taurid meteors, 90, 101, 189
• Temperature inversions, displacement of image by, 65;
• low-level, 155, 157;
• mirages caused by, 82, 157, 170, 253–54, 269;
• multiple, 82, 158, 253;
• radar angels from, 151, 158–60, 170
• Tero, 19, 25
• Texarkana, Ark., 166
• Tin, in alloys, 234;
• in saucer fragments, 232
• Tombaugh, 256, 266–70;
• UFO reported by, 268
• Trans World Airlines flight, UFOs reported from, 70
• Travel, interplanetary, 19, 77–78, 216–17;
• in time, 11
• Tremonton, Utah, movies, 130–32
• Trindade Island UFO, 206–16, Pl. VIb
• True magazine, 158
• Truth, alleged Air Force concealment, 37, 69–70, 107, 154, 157–58, 220, 277, 283
• Tumbleweeds, as UFOs, 57
• TV set, malfunction of, 185.
• See also E-M effects
• U
• UFO, as misnomer, 271;
• defined, 2
• UFO reports, Air Force study of, 272–75;
• commonest explanations of, 105–6, 275;
• witnesses making, 2, 272
• UFO Research Committee of Akron, Ohio, 276, 279, 281, 288;
• Fitzgerald case studied by, 283–87;
• Killian case studied by, 53
• UFOs, colors of, 7;
• electromagnetic, 172–75;
• formations of, 114–16;
• fragments of, 88, 230–37;
• invisible, 10, 145, 152, 155–57, 165, 193, 194, 202;
• motions of, 7;
• radar reports of, 5, 152, 155–57;
• shapes of, 7–8;
• silence of, 193;
• sounds made by, 7, 193;
• types of, 6–9;
• velocity of, 13, 124, 129, 161, 193, 194, 258
• Unidentified flying object, 2.
• See also UFOs
• Unified field theory, 196
• United Airlines flights, UFO reported from, 92, 105
• Unknowns, 274.
• See UFOs
• V
• Van Tassel, G. W., 201, 202
• Vapor lock, 188, 190
• Velocity, difficulty of estimating UFO, 14, 41, 131;
• of light, 19, 150;
• of meteors, 93, 98–100;
• of radio waves, 150;
• of sound, 147
• Venus, magnitude of, 66;
• mirages of, 67–75, 181;
• visitors from, 203
• Visitors, extraterrestrial, 4, 10–11, 183–84, 186, 199–200, 203–4
• W
• Wallops Island, Va., 44–45
• Washington, D.C., “invasion,” 155–57
• Washington, Ga., 225
• Wave clouds, 26–29
• Weather, effects on radar, 150–51, 154, 155, 157–58
• Weather balloons, 31–33.
• See also Balloons
• White, T. D., 237
• White Pass, Wash., 28, Pl. Ia
• White Sands, N.M., 92, 180
• Whitted, J. B., 108.
• See also Chiles-Whitted sighting
• Wilkins, H. P., 228
• Wilkins, H. T., 16
• Witnesses, UFO beliefs of, 52, 54, 80, 104, 106, 110, 168, 259, 269
• Wright-Patterson Air Force Base, UFO sighted from, 70–72
• X
• Xenochemistry, 231