The author surveys the origins and evolution of public library services, outlining their historical development, organizational forms, and social functions. He analyzes what constitutes an effective library service, outlines strategies for extension into urban and rural districts, and argues for coordinated national provision and professional training for librarians. The book combines descriptive sketches of notable collections and reading rooms with practical recommendations on legislation, funding, and adult education, emphasizing libraries' potential to foster self-improvement, broaden cultural access, and contribute to civic reconstruction.