Publisher: Permabooks, No. M4172, 1960, 235 pgs. Mass market Paperback. A First Perma Edition. Tightly bound, squared with an unmarked interior. Small tear to the top front spine hinge. "Fifteen soaring, exciting, unpredictable, stories about the world of Outer Space. "Stories from: Theoodore R. Cogswell, Evelyn E. Smith, Sheckley, Leiber, Davidson, Finn O'Donnevan, Asimov, Lester Del Rey, Pohl, William Morrison, Damon Knight, Wyman Guin, Simak and Cordwainer Smith.