Included: "Counter Foil " by George O. Smith; "A Bad Day for Sales " by Fritz Leiber; "Without a Thought " by Fred Saberhagan; "Solar Plexus " by James Blish; "The Macauley Circuit " by Robert Silverberg; "But Who Can Replace a Man? " by Brian W. Aldiss; "Instinct " by Lester del Rey; "The Twonky " by Lewis Padgett (Henry Kuttner); "Hunting Lodge " by Randall Garrett; and "With Folded Hands " by Jack Williamson.