• Introduction by August Derleth
• Primitives by August Derleth
• From a Private Mad-House by Humphrey Repton
• Missing One's Coach: An Anachronism by Anonymous
• Tale of a Chemist by Anonymous
• The Last American by J.A. Mitchell
• Mid-Period Pieces by August Derleth
• Infinity Zero by Donald Wandrei
• Frankenstein - Unlimited by H.A. Highstone
• Open, Sesame! by August Derleth [as by Stephen Grendon ]
• Tepondicon by Carl Jacobi
• The Fear Planet by Robert Bloch
• The Contemporary Scene by August Derleth
• De Profundis by Murray Leinster
• Invasion by Frank Belknap Long
• Dear Pen Pal A.E. van Vogt
• Time to Rest John Wyndham [as by John Beynon Harris ]
• An Ounce of Prevention by Paul A. Carter [as by Paul Carter ]
• The Song of the Pewee by August Derleth [as by Stephen Grendon ]
• And Lo! The Bird by Nelson S. Bond [as by Nelson Bond ]
• The One Who Waits by Ray Bradbury
• Vignettes of Tomorrow by Ray Bradbury
• Holiday by Ray Bradbury
• The Man Who Rode the Saucer by August Derleth [as by Kenyon Holmes ]
• Later Than You Think by Fritz Leiber
• Introduction by August Derleth
• Primitives by August Derleth
• From a Private Mad-House by Humphrey Repton
• Missing One's Coach: An Anachronism by Anonymous
• Tale of a Chemist by Anonymous
• The Last American by J.A. Mitchell
• Mid-Period Pieces by August Derleth
• Infinity Zero by Donald Wandrei
• Frankenstein - Unlimited by H.A. Highstone
• Open, Sesame! by August Derleth [as by Stephen Grendon ]
• Tepondicon by Carl Jacobi
• The Fear Planet by Robert Bloch
• The Contemporary Scene by August Derleth
• De Profundis by Murray Leinster
• Invasion by Frank Belknap Long
• Dear Pen Pal A.E. van Vogt
• Time to Rest John Wyndham [as by John Beynon Harris ]
• An Ounce of Prevention by Paul A. Carter [as by Paul Carter ]
• The Song of the Pewee by August Derleth [as by Stephen Grendon ]
• And Lo! The Bird by Nelson S. Bond [as by Nelson Bond ]
• The One Who Waits by Ray Bradbury
• Vignettes of Tomorrow by Ray Bradbury
• Holiday by Ray Bradbury
• The Man Who Rode the Saucer by August Derleth [as by Kenyon Holmes ]
• Later Than You Think by Fritz Leiber