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N° 1 - mars 1952 Couverture de Martin Key Twelve Times Zero • Howard Browne • na The Stowaways • Alvin Heiner • ss Bitter Victory • Walter Miller, Jr. • ss Black Eyes and the Daily Grind • Milton Lesser Of Stegner's Folly • Richard S. Shaver • ss Never Underestimate • Theodore Sturgeon • nv The Hell Ship • Raymond A. Palmer • nv The Old Martians • Rog Phillips • ss	N° 2 - mai 1952 Couverture de Ralph Joiner Jungle in the Sky • Milton Lesser • na Welcome, Martians! • S. A. Lombino • ss It Takes a Thief • Walter Miller, Jr. • ss The Beast • John W. Jakes • ss Infinity's Child • Charles V. De Vet • nv Resurrection Seven • Stephen Marlowe • ss Dreamer's World • Bryce Walton • ss The Revealing Pattern • Alvin Heiner • ss
N° 3 - juillet 1952 Couverture d'Henry Jones Let My People Go • Walter M. Miller, Jr. • The One and the Many • Milton Lesser • ss Hoiman and the Solar Circuit • G. Gordon Dewey Robots of the World! Arise! • Mari Wolf • ss Vital Ingredient • Charles V. De Vet • ss "And That's How It Was, Officer" • Ralph Sholto • The Terrible Answer • Arthur G. Hill • ss McIlvaine's Star [*Tex Harrigan] • August Derleth The Smiler • Albert Hernhuter • vi; given as by Albert Hernhunter	N° 4 - septembre 1952 Couverture de Ralph Joiner The Beautiful People • Charles Beaumont • ss Holes, Incorporated • L. Major Reynolds • ss Marley's Chain • Alan E. Nourse • ss An Empty Bottle • Mari Wolf • ss The Space Clause • L. Sprague de Camp • ss Shock Treatment • Stanley Mullen • nv The Clean and Wholesome Land • Ralph Sholto • The Last Supper • T. D. Hamm • vi The Skull • Philip K. Dick • n Sinister Paradise • Robert Moore Williams • nv
N° 5 - novembre 1952 Couverture de Ralph Joiner The Image and the Likeness • John Scott Campbell • na Brother to the Machine • Richard Matheson • The Running Hounds • John W. Jakes • ss You Too Can be a Millionaire • Noel Loomis • ss Let There Be Light • H. B. Fyfe • ss Generals Help Themselves • M. C. Pease • ss	N° 6 - janvier 1953 Couverture de d'Anton Kurka "The Ultimate Re-Sowing of the Human Race - 4000 AD Check and Checkmate • Walter Miller, Jr. • nv The Last Gentleman • Rory Magill • ss Ye of Little Faith • Rog Phillips • nv Success Story • Robert Turner • ss The Peacemaker • Alfred Coppel • ss The Statue • Mari Wolf • ss Time Enough at Last • Lyn Venable • ss The Anglers of Arz • Roger Dee • ss No Shield from the Dead • Gordon R. Dickson • ss