Contains The Space Merchants (1953) by Frederik Pohl and C.M. Kornbluth; More than Human (1953) by Theodore Sturgeon; The Long Tomorrow (1955) by Leigh Brackett; and The Shrinking Man (1956) by Richard Matheson.

Contains Double Star (1956) by Robert A. Heinlein; The Stars My Destination (1956) by Alfred Bester; A Case of Conscience (1958) by James Blish; Who? (1958) by Algis Budrys; and The Big Time (1958) by Fritz Leiber.