Contents (view Concise Listing)

• Second Variety • [Claws • 1] • (1953) • novelette by Philip K. Dick
• Youth • (1952) • novelette by Isaac Asimov
• To Each His Star • (1952) • short story by Bryce Walton
• Security • (1953) • novelette by Poul Anderson
• Divinity • (1953) • short story by William Morrison
• The Hour of Battle • (1953) • short story by Robert Sheckley
• Instant of Decision • (1953) • novelette by Randall Garrett
• Let 'em Breathe Space! • (1953) • novelette by Lester del Rey (variant of Let 'em Breathe Space)
• The Ultroom Error • (1952) • short story by Jerry Sohl (variant of Ultroom Error)
• Infinite Intruder • (1953) • novelette by Alan E. Nourse
• Collectivum • (1953) • short story by Mike Lewis (1950's)
• The Adventurer • (1953) • short story by C. M. Kornbluth
• Decision • (1953) • short story by Frank M. Robinson
• Pursuit • (1952) • novelette by Lester del Rey
• Exile • (1953) • short story by H. B. Fyfe
• Stop Look and Dig • (1953) • short fiction by George O. Smith (variant of Stop, Look and Dig)
• The Worshippers • (1953) • novelette by Damon Knight
• The Hunters • (1953) • short story by William Morrison
• The Ego Machine • (1952) • novelette by Henry Kuttner and C. L. Moore [as by Henry Kuttner]
• The Variable Man • (1953) • novella by Philip K. Dick
• Ullr Uprising • [Federation] • (1952) • novel by H. Beam Piper