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Includes "The Spider And The Raceless One" by Grant Stockbridge.
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Cover by Matt Fox. Includes "City Of Lost People" by Allison V. Harding.
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Cover by F. Tinsley. Includes "Aviation Cades And The U. S. Fleet" by John R. Hoyt.
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Includes "The Lady Is A Witch" by Norman A. Daniels.
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Cover by J. Allen St. John. Includes "Buccaneers Of Venus (Part 3)" by Otis Adelbert Kline.
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Cover by F. Tinsley. Includes Light Planes Of 1937" by Frank Tinsley.
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Cover by Margaret Brundage. Includes "The Graveyard Rats" by Henry Kuttner.
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Includes "The Hornet And The Vulture" by Samuel Merwin.
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Includes "The Triumph Of Captain Future" by Edmond Hamilton.
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Cover by Virgil Finlay. Includes "Spawn Of The Maelstrom" by August Derleth & Mark Schorer.
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Cover by Rogers. Includes "Strain" by L. Ron Hubbard.
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Cover by Margaret Brundage. Includes "The Metronome" by August W. Derleth.
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Cover by Rogers. Includes "Universe" by Robert Heinlein.
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Cover by Margaret Brundage. Includes "The Grinning Ghoul" by Robert Bloch.
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Only issue. Cover by Joseph Chenoweth. Includes "Gods Guard The Brave" by H. Bedford Jones.
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Features "The Devil's Black Rock" by Kenneth Robeson.
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Includes "Frontier Planet" by Manly Wade Wellman.
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Cover by Jack Coggins. Includes "The Amateur Alchemist" by Murray Leinster.
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Cover by Matt Fox. Includes "Floral Tribute" by Robert Bloch.
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Cover by J. Allen St. John. Includes "Buccaneers Of Venus (Part 2)" by Otis Adelbert Kline.
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Includes "Killer, What's Your Name?" by Frederick C. Davis.
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Formerly Thrilling Mystery.
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Includes "Snowbirds" by Eldredge L. Mackay.
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Includes "A God In A Garden" by Theodore Sturgeon.
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"Fangs of the Serpent" by Robert J. Hogan.
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Cover by John Howitt. Includes "The Yellow Scourge" by Curtis Steele.
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Includes "The Northdale Mystery" by Maxwell Grant.
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Includes "Speak For Yourself" by John Quincy.
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Features "The Speaking Stone" by Kenneth Robeson.
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Cover by John Howitt. Includes "Rockets From Hell" by Curtis Steele.
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Cover by John Howitt. Includes "March Of The Flame Marauders" by Curtis Steele.
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Cover by John Howitt. Includes "Legions Of Starvation" by Curtis Steele.
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Includes "Twice In Time" by Manly Wade Wellman.
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Features "The Running Skeletons" by Kenneth Robeson.
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Final issue. Cover by Virgil Finlay. Includes "De Brignac's Lady" by Kirk Washburn. Digest size.
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Cover by Hannes Bok. Includes "The Robot God" by Ray Cummings.
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"Raiders of the Death Patrol" by Robert J. Hogan.
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"The Sky Serpent Flies Again" by Robert J. Hogan.
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Final issue. "Wings of the Death Tiger" by Robert J. Hogan.
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Includes "The Nightmare Town" by Dashiell Hammett.
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Cover by Hugh Rankin. Includes "The Hills Of The Dead" by Robert E. Howard.
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Includes "The Bride Of Osiris (Part 1)" by Otis Adelbert Kline.
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"Wings of the Death Monster" by Robert J. Hogan.
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Includes "The Quest of Qui" by Kenneth Robeson.
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Cover by Ed Emsh. Includes "The Spiral Of The Ages" by Fletcher Pratt.
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Final issue. "The Mystery of the Singing Mummies" by Donald E. Keyhoe.
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Winter issue includes "The Magigals Mystery" by Maxwell Grant.
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Cover by J. Allen St. John. Includes "Moonlight On A Skull" by Robert E. Howard.
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Cover by John Howitt. Includes "The Corpse Cargo" by Grant Stockbridge.
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Includes "Town Marshall" by Walt Coburn.
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Includes "The Gold Ogre" by Kenneth Robeson
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Includes "Hang Him High" by Norbert Davis.
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Cover by John Howitt. Includes "Blood Reign Of The Dictator" by Curtis Steele.
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Cover by Earle K. Bergey. Includes "Tarnished Utopia" by Malcolm Jameson.
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"Flight of the Death Battalion" by Robert J. Hogan.
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Cover by A. von Munchhausen. Features "Lunar Landing" by Lester Del Ray and "The Beast" by L. Ron Hubbard.
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Cover by J. Allen St. John. Includes "Golden Blood (Part 1)" by Jack Williamson.
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Cover by Earle K. Bergey. Includes "The Visitor" by Ray Bradbury.
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Includes "Rule Of The Torture Lash" by Gordon Keyne.
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Cover by Matt Fox. Includes "The Testament Of Clairborne Boyd" by August Derleth.
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Includes "The Case Of The Yellow Mask".
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Cover by William Timmins. Includes "The Weapon Shop" by A. E. van Vogt.
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Cover by Margaret Brundage. Includes "The Devil In Iron" by Robert E. Howard.
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Includes "Give Me Ten Men" by Charles Marquis Warren.
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Cover by Rogers. Includes "Gray Lensman" Part 2 by E. E. Smith, Ph.D.
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Cover by John Newton Howitt. Includes "Master Of Monsters" by John M. Knox.
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Includes "Beating The Weather Devils" by Lieut. W. M. Wood.
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Cover by Rogers. Includes "Methuselah's Children" part 1 by Robert Heinlein.
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Cover by Emsh. Includes "Cholwell's Chickens" by Jack Vance.
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Cover by C.C. Serf. Includes "The Thing On The Roof" by Robert E. Howard.
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Includes "Hang Him High" by Norbert Davis.
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Includes "The Seal Of Sin" by Henry Kuttner.
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Includes "Invaders From The Outer Suns" by Frank Belknap Long, Jr.
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Cover by Ray Quigley. Includes "Masquerade" by Henry Kuttner.
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