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Cover by Earle Bergey. Includes "Lord Of The Storm" by Keith Hammond.
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Includes "Reckoning From Beyond" by Robert Leslie Bellem.
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"Raiders of the Death Patrol" by Robert J. Hogan.
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Includes "The Telepathic Tomb" by Frederic Arnold Kummer, Jr.
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"The Green Scourge of the Sky Raiders" by Robert J. Hogan.
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Cover by Jon Arfstrom. Includes "Hell's Bells" by Duncan H. Munro.
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Cover by Margaret Brundage. Includes "The Grinning Ghoul" by Robert Bloch.
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Cover by Modest Stein. Features "Overthrow" by Cleve Cartmill.
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Continuing from AIR ACTION.
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Features "The Running Skeletons" by Kenneth Robeson.
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Cover by H. W. Scott. Includes "Danger In The Dark" by L. Ron Hubbard.
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Features "The Well Ones" by Kenneth Robeson.
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Cover by Cartier. Includes "Lest Darkness Fall" by L. Sprague de Camp.
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Includes "Fear" by L. Ron Hubbard. First publication of this novel.
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Cover by William Timmins. Includes "Hunch" by Clifford D. Simak.
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Cover by Anderson. Includes "The Kingslayer" by L. Ron Hubbard.
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Includes "Planets In Peril" by Edmond Hamilton.
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Features "The Time Terror" by Kenneth Robeson.
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Includes "Man Alive!" by Frederick C. Painton.
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Cover by Jerome Rozen. Includes "The Case Of The Six Coffins" by Robert J. Hogan.
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Features "Alibi Trail" by Maxwell Grant.
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Includes "Pony Express Rider" by A. Leslie.
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Cover by Margaret Brundage. Includes "Wild Grapes" by A. W. Derleth.
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Includes "The Silver Witch" by John Peter Drummond.
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Final issue. Cover by Emsh. Includes "Gateway To Paradise" by Jack Williamson.
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Final issue. "Wings of the Death Tiger" by Robert J. Hogan.
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"The Mystery of the Golden Skull" by Donald E. Keyhoe.
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"White Wings for the Dead" by Robert J. Hogan.
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Cover by Earle Kulp Bergey. Includes "Dragon's Island" by Jack Williamson.
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Cover by Margaret Brundage. Includes "Lansing's Luxury" by August Derleth.
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Cover by Jack Coggins. Includes "The Amateur Alchemist" by Murray Leinster.
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Cover by Margaret Brundage. Includes "The Graveyard Rats" by Henry Kuttner.
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Includes "Brethren Of Death" by George L. Eaton.
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Cover by Lee Brown Coye. Includes "Four From Jehlam" by Allison Harding.
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Includes "The Devil's Playground" by Kenneth Robeson.
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Cover by A. R. Tilburne. Includes "The Valley Of The Assassins" by Edmond Hamilton.
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Cover by Matt Fox. Includes "The Dweller In Darkness" by August Derleth.
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Cover by J. Allen St. John. Includes "The Haunter Of The Dark" by H. P. Lovecraft.
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Includes "Compliments Of The Author" by Henry Kuttner.
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Includes "Journey To Barkut" by Murray Leinster.
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Cover by Earle Bergey. Includes "The Energy Eaters" by Arthur K. Barnes & Henry Kuttner.
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"Flight of the Death Battalion" by Robert J. Hogan.
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Cover art by Emery Clarke. Includes "The Spotted Men" by Kenneth Robeson.
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Cover by William Timmins. Includes "Doodad" by Ray Bradbury.
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Cover by H. W. Brown. Includes "Crystallized Thought" by Nat Schachner.
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Cover by Earle K. Bergey. Includes "Hollywood On The Moon" by Henry Kuttner.
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Includes "And So To Death" by Cornell Woolrich.
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Includes "The Pure Evil" by Kenneth Robeson.
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"The Mystery of the Dragon's Shadow" by Donald E. Keyhoe.
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Cover by Earle Bergey. Includes "Tough Old Man" by L. Ron Hubbard.
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Includes "Tomorrow's Air Invasion" by Capt. Samuel Taylor Moore.
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Cover by H. W. Brown. Features "Voyage 13" by Ray Cummings and includes "The Dangerous Dimension" by L. Ron Hubbard.
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Includes "Large Flying Boats VS. Large Land Planes" by Igor I. Sikorsky.
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Includes "Green Globes Of Death" by Grant Stockbridge.
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Cover by Walter Popp. Includes "The Time Masters" by Wilson Tucker.
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"Here Flies the Hawk of Hell" by Robert J. Hogan.
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"The Condor Rides With Death" by Robert J. Hogan.
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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 Margaret Brundage. Includes "The Black Gargoyle" by Hugh B. Cave.
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Cover by Rogers. Includes "Nightfall" by Isaac Asimov.
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Cover by Rogers. Includes "Logic Of Empire" by Robert Heinlein.
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Cover by John Howitt. Includes "Master Of The Death Madness" by Grant Stockbridge.
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Includes "Murder Over Hollywood" by George L. Eaton.
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Cover by F. Tinsley. Includes "The Baby Albatross" by Frank Tinsley.
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Includes "The Dagger In The Sky" by Kenneth Robeson.
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Features "Vengeance Bay" by Maxwell Grant.
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Fetures "The Black, Black Witch" by Kenneth Robeson.
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Includes "Always Comes Evening" by R.E. Howard.
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Features "They Died Twice" by Kenneth Robeson.
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Cover by John Howitt. Includes "Satan's Death Blast" by Grant Stockbridge.
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Includes "Passport To Jupiter" by Raymond Z. Gallun.
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Cover by John Howitt. Includes "Master Of Broken Men" by Curtis Steele.
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Cover by John Howitt. Includes "The Army Of The Dead" by Curtis Steele.
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Features "Undermost" by Manly Wade Wellman and "Rocket Skin" by Ray Bradbury.
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Cover by Charles A. Kennedy. Includes "Something From Out There" by August Derleth.
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Includes "A Million To One Chance" by Elizabeth York Miller.
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Cover by John Howitt. Includes "Reign Of The Death Fiddler" by Grant Stockbridge.
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"Patrol of the Iron Scourge" by Robert J. Hogan.
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Includes "The Dawn-Seekers" by Frederick C. Painton.
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"Bombs from the Murder Wolves" by Robert J. Hogan.
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Includes "Tarzan And The Golden Lion" by Edgar Rice Burroughs.
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Includes " Voice Of Death" by Maxwell Grant.
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Includes "The Suicide Battalion" by Curtis Steele.
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Includes "Purple Aces" by Robert J. Hogan.
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Cover by Lee Brown Coye. Includes "Mrs. Lannisfree" by August Derleth.
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Features "Gems of Doom" by Maxwell Grant.
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Includes "The Quest Of Tarzan" by Edgar Rice Burroughs.
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"Horde of the Black Eagle" by Robert J. Hogan.
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Including "Curse Of The Calaboose Brand" by J. Edward Leithead.
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