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Cover by Alex Schomburg. Includes "Spacemen Lost" by George O. Smith.
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Includes "The Hag Seleen" by Theodore Sturgeon & James H. Beard.
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Cover by H. W. Scott. Includes "None But Lucifer" by H. L. Gold & L. Sprague de Camp.
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Cover by John Howitt. Includes "The Pain Emperor" by Grant Stockbridge.
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"Patrol of the Iron Scourge" by Robert J. Hogan.
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Includes "Test Pilot Test" by Tracy Richardson.
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Includes "Gunsmoke For Sale" by Laurence Donovan.
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Summer issue. Includes "The Whispering Eyes".
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Includes "Hell Below" by Kenneth Robeson.
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Cover by Ed Emsh. Includes "The Spiral Of The Ages" by Fletcher Pratt.
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"The Bloody Wings of the Vampire" by Robert J. Hogan.
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Cover by Joseph Eberle. Includes "A Corner For Lucia" by August Derleth.
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Includes "The Mental Monster" by Kenneth Robeson.
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Includes "The Suicide Battalion" by Curtis Steele.
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Features "The Invisible Box Murders" by Kenneth Robeson.
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Includes "Nazi Terror Over New York" by Robinson MacLean.
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Cover by Evan Singer. Digest size. Includes "Brenda" by Margaret St. Clair.
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Cover by F. Tinsley. Includes "Europe Preens Her Wings" by Clyde Pangborn.
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Cover by C.C. Serf. Includes "Black Chant Imperial" by Robert E. Howard.
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Includes "The Mind Magnet" by Paul Ernst.
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Cover by F. Tinsley. Includes "Nests For Sea-Hawks" by Arch Whitehouse.
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Includes "Your Money's Worth In The Air" by Lieut. W. M. Wood.
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Cover by Earle K. Bergey. Includes "The Dark World" by Henry Kuttner.
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Cover by John Howitt. Includes "The Invisible Empire" by Curtis Steele.
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"Flying Coffins of the Damned" by Robert J. Hogan.
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Cover by Earle K. Bergey.Includes "Blood On The Sun" by Hal K. Wells.
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"The Black Wings of the Raven" by Robert J. Hogan.
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Includes "Brand Of The Black Bat" by G. Wayman Jones. Introduction and 1st appearance of The Black Bat.
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Includes "The Survivor" by H. P. Lovecraft & August Derleth. Digest size.
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Cover by Rogers. Features "Briddle and Saddle" by Isaac Asimov and "The Slaver" by L. Ron Hubbard.
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Cover by Rogers. Includes "The Stolen Dormouse" by L. Sprague de Camp.
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Includes "King Of Fang And Claw" by Bob Byrd. First appearance of a Tarzan-like character named Ka-Zar. Cover painting by J. W. Scott.
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Cover by Virgil Finlay. Includes "The Luck Of Ignatz" by Lester del Rey.
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Includes "Always Comes Evening" by R.E. Howard.
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Cover by Pete Kuhlhoff. Includes "The Skull Of The Marquis De Sade" by Robert Bloch.
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Features "Masters of Death" by Maxwell Grant.
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Cover by John Howitt. Includes "Slaves Of The Murder Syndicate" by Grant Stockbridge.
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Features "The Time Terror" by Kenneth Robeson.
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Cover by H. W. Wesso. Includes "The Shadow In The Sky" by August W. Derleth.
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Cover by Boris Dolgov. Includes "Lizzie Borden Took An Axe" by Robert Bloch.
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Cover by Rudolph Belarski. Includes "The Water World" by Oscar J. Friend.
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Cover by John Howitt. Includes "The Melting Death" by Curtis Steele.
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Includes "The Magician Of Mars" by Edmond Hamilton.
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Includes "The Faceless Men" by Arthur Leo Zagat.
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Cover by Margaret Brundage. Includes "The Feast In The Abbey" by Robert Bloch.
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Cover by Matt Fox. Includes "The Underbody" by Allison V. Harding.
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Final issue. Includes "Emeralds Of The Inca" by George Creel.
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Cover by Rogers. Includes "Nightfall" by Isaac Asimov.
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Cover by F. Tinsley. Includes "The Pigskin Bag" by George L. Eaton.
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Cover by John Howitt. Includes "Overlord Of The Damned" by Grant Stockbridge.
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Cover by John Howitt. Includes "Death's Crimson Juggernaut" by Grant Stockbridge.
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Includes "The Sign Of Zorro" by Johnston McCulley.
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Features "Pirate Isle" by Kenneth Robeson.
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Includes "The Devil's Rescue" by L. Ron Hubbard.
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Includes "The Day To Come" by Don Tracy.
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Two alternate covers are known to exist.
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Cover by Alex Schomburg. Includes "The Houses Of Iszm" by Jack Vance.
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Includes "The Dagger In The Sky" by Kenneth Robeson.
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Cover by W. H. Silvey. Includes "The Place In The Woods" by August Derleth. Digest size.
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Includes "Murder Over Hollywood" by George L. Eaton.
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"Raiders of the Death Patrol" by Robert J. Hogan.
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Includes "Traitress' Wages" by Lew Merrill.
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Cover by Lawrence. Includes "Death Crystal" by George O. Smith.
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Includes "Death's Masquerade" by Maxwell Grant.
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Includes "Citadel Of Lost Ships" by Leigh Brackett.
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Includes "Green Globes Of Death" by Grant Stockbridge.
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Includes "The Quest Beyond The Stars" by Edmond Hamilton.
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Cover by Ray Quigley. Includes "Seven Seconds Of Eternity" by Robert H. Leitfred.
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Cover design by E.M. Stevenson. Includes "He" by H.P. Lovecraft.
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Includes "Cavern Of The Shining Pool" by Arthur Leo Zagat.
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Cover by Walter Popp. Includes "Naked Eye" by Thomas Bell.
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Cover by Rogers. Includes "Time Wants A Skeleton" by Ross Rocklynne.
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Cover by John Howitt. Includes "Master Of The Death Madness" by Grant Stockbridge.
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Includes "Captain Future and the Seven Space-Stones" by Edmond Hamilton.
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"Fangs of the Winged Cobra" by Robert J. Hogan.
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"Death Rides the Midnight Patrol" by Robert J. Hogan.
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Cover by Schneeman. Includes "The Merman" by L. Sprague de Camp.
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