Contents (view Concise Listing)

• 9 • Introduction (A Century of Science Fiction) • (1962) • essay by Damon Knight
• 15 • The Ideal (Excerpt) • [Professor Manderpootz] • (1935) • short fiction by Stanley G. Weinbaum
• 17 • Moxon's Master • (1910) • short story by Ambrose Bierce (variant of A Night at Moxon's 1899)
• 26 • Reason • [Mike Donovan] • (1941) • short story by Isaac Asimov
• 42 • But Who Can Replace a Man? • (1958) • short story by Brian W. Aldiss (variant of Who Can Replace a Man?)
• 51 • from The Time Machine (excerpt) • [H. G. Wells' Time Machine Universe] • (1962) • short fiction by H. G. Wells
• 56 • Of Time and Third Avenue • (1951) • short story by Alfred Bester
• 64 • Sail On! Sail On! • (1952) • short story by
  Philip José Farmer^?Philip Jose Farmer
• 73 • Worlds of the Imperium (Excerpt) • [Imperium (Keith Laumer)] • (1961) • short fiction by Keith Laumer
• 74 • The Business, As Usual • (1952) • short story by Mack Reynolds
• 80 • What's It Like Out There? • (1952) • novelette by Edmond Hamilton
• 101 • Sky Lift • (1953) • short story by Robert A. Heinlein
• 115 • The Star • (1955) • short story by Arthur C. Clarke
• 121 • The Crystal Egg • (1897) • short story by H. G. Wells
• 136 • The Wind People • (1959) • short story by Marion Zimmer Bradley
• 152 • Unhuman Sacrifice • (1958) • novelette by Katherine MacLean
• 180 • What Was It? • [Harry Escott] • (1859) • short story by Fitz-James O'Brien
• 192 • The First Days of May • (1960) • short story by Claude Veillot (trans. of Les premiers jours de mai)
• 208 • Day of Succession • (1959) • short story by Theodore L. Thomas
• 215 • Angel's Egg • (1951) • novelette by Edgar Pangborn
• 249 • Another World • (1962) • novelette by
  J. H. Rosny aîné^?J. H. Rosny aine
  (trans. of Un autre monde 1895)
• 273 • Odd John (Excerpt) • (1935) • short fiction by Olaf Stapledon
• 277 • Call Me Joe • (1957) • novelette by Poul Anderson
• 309 • From the "London Times" of 1904 • (1898) • short story by Mark Twain
• 319 • Twenty Thousand Leagues Under the Sea (excerpt) • [Vingt mille lieues sous les mers (abridgments, adaptations, and excerpts)] • (1956) • short fiction by Jules Verne
• 324 • You Are with It! • (1961) • short story by Will Stanton
• 331 • Cease Fire • (1958) • short story by Frank Herbert
• 351 • Suggested Reading • (1962) • essay by uncredited