Contents (view Concise Listing)

• ix • Introduction (From Wells to Heinlein) • (1979) • essay by James E. Gunn [as by James Gunn]
• 4 • The New Accelerator • (1901) • short story by H. G. Wells
• 19 • The Machine Stops • (1909) • novelette by E. M. Forster
• 50 • From Under the Moons of Mars • (1912) • short fiction by Edgar Rice Burroughs
• 78 • The Moon Pool • [Walter Goodwin] • (1918) • novella by A. Merritt
• 117 • The Red One • [The Red One • 1] • (1918) • novelette by Jack London
• 141 • Dagon • (1919) • short story by H. P. Lovecraft
• 149 • The Tissue-Culture King • (1926) • novelette by Julian Huxley
• 171 • The Revolt of the Pedestrians • (1928) • novelette by David H. Keller, M.D.
• 199 • From Last and First Men • [Last and First Men] • (1930) • short fiction by Olaf Stapledon
• 216 • From Brave New World • (1932) • short fiction by Aldous Huxley
• 234 • A Martian Odyssey • [Tweel • 1] • (1934) • novelette by Stanley G. Weinbaum
• 259 • Twilight • [Twilight • 1] • (1966) • novelette by John W. Campbell, Jr. [as by John W. Campbell]
• 280 • Proxima Centauri • (1935) • novella by Murray Leinster
• 328 • What's It Like Out There? • (1952) • novelette by Edmond Hamilton
• 351 • With Folded Hands • [Humanoids] • (1948) • novelette by Jack Williamson (variant of With Folded Hands ... 1947)
• 394 • Hyperpilosity • (1938) • short story by L. Sprague de Camp (variant of Hyperpelosity)
• 408 • The Faithful • (1938) • short story by Lester del Rey
• 419 • Black Destroyer • [Space Beagle] • (1939) • novelette by A. E. van Vogt
• 449 • Nightfall • (1941) • novelette by Isaac Asimov
• 484 • Requiem • [D. D. Harriman] • (1940) • short story by Robert A. Heinlein
• 501 • A Chronology of Science Fiction • (1979) • essay by uncredited