Includes "The Scarlet Widow" by Hugh B. Cave.
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Cover by Earle K. Bergey.Includes "Blood On The Sun" by Hal K. Wells.
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Final issue. "Wings of the Death Tiger" by Robert J. Hogan.
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Includes "The Devil's Rescue" by L. Ron Hubbard.
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Includes "When New York Vanished" by Henry Kuttner.
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Cover by William Timmins. Includes "The Barrier" by Anthony Boucher.
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Cover by John Howitt. Includes "Master Of The Death Madness" by Grant Stockbridge.
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Includes "The Black Flame" by Stanley G. Weinbaum
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Cover by John Hewitt. Includes "The Red Invader" by Curtis Steele.
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Cover by William Timmins. Includes "Nothing But Gingerbread Left" by Henry Kuttner.
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Cover by William Timmins. Includes "Hunch" by Clifford D. Simak.
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Cover by William Timmins. Includes "Swimming Lesson" by Raymond F. Jones.
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Cover by Schneeman. Includes "Neutral Vessel" by Harl Vincent.
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"The Monsters" by Kenneth Robeson.
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Features "Mystery Island" by Kenneth Robeson.
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Cover by A. R. Tilburne. Includes "The Tombstone" by Ray Bradbury.
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Cover by John Howitt. Includes "Legions Of Starvation" by Curtis Steele.
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Final issue. "The Mystery of the Singing Mummies" by Donald E. Keyhoe.
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Cover by Jon Arfstrom. Includes "The Black Island" by August Derleth.
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Includes "Mad Mesa" by Kenneth Robeson.
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Cover by A. R. Tilburne. Includes "Satan's Phonograph" by Robert Bloch.
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"Scourge of the Sky Monster" by Robert J. Hogan.
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Cover by C.C. Serf. Includes "The Whisper In The Darkness" by H.P. Lovecraft.
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Cover by Lee Brown Coye. Includes "Notebook Found In A Deserted House" by Robert Bloch.
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"The Falcon Flies with the Damned" by Robert J. Hogan.
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Cover by Rogers. Includes "Magic City" by Nelson S. Bond.
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Includes "A God In A Garden" by Theodore Sturgeon.
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"The Black Buzzard Flies to Hell" by Robert J. Hogan.
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Cover by F. Tinsley. Includes "Death Rides The Sky" by George L. Eaton.
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Cover by Schneeman. Includes "The Merman" by L. Sprague de Camp.
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Cover by C. Meimer. Includes "You Too, Can Be An Army Aviator" by Charles Edward Chapel.
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Includes "Brethren Of Death" by George L. Eaton.
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"The Patrol to End the World" by Robert J. Hogan.
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Cover by Edd Cartier. Includes "All Is Illusion" by Henry Kuttner.
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Includes "Murder Over Hollywood" by George L. Eaton.
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Includes "Purple Aces" by Robert J. Hogan.
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Includes "Drums Of Khartoum" by E. Hoffman Price.
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Includes "Gunswift" by Jack Byrne.
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Includes "Solomon's Stone" by L. Sprague de Camp.
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Cover by Margaret Brundage. Includes "The Brood Of Bubastis" by Robert Bloch.
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Cover by Earle K. Bergey. Includes "Hollywood On The Moon" by Henry Kuttner.
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Cover by Lee Brown Coye. Includes "Four From Jehlam" by Allison Harding.
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"The Green Scourge of the Sky Raiders" by Robert J. Hogan.
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Cover by Margaret Brundage. Includes "The Black Kiss" by Robert Bloch & Henry Kuttner.
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Two alternate covers are known to exist.
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Includes "Quicksands Of Youthwardness" by Malcolm Jameson.
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Includes "Rule Of The Torture Lash" by Gordon Keyne.
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Cover by Earle Bergey. Includes "Don't Look Now" by Henry Kuttner.
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Cover by John Howitt. Includes "The Melting Death" by Curtis Steele.
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Cover by Alex Schomburg. Includes "Spacemen Lost" by George O. Smith.
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Cover by Rogers. Includes "Final Blackout" Part 1 by L. Ron Hubbard.
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Cover by Evan Singer. Digest size. Includes "Brenda" by Margaret St. Clair.
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Cover by Rogers. Includes "Jurisdiction" by Nat Schachner.
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Includes "The Northdale Mystery" by Maxwell Grant.
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Features "Murder Lake" by Maxwell Grant.
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Cover by John Howitt. Includes "The Wheel Of Death" by R. T. M. Scott.
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Cover by Margaret Brundage. Includes "Come To Me!" by August W. Derleth.
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Includes "Town Marshall" by Walt Coburn.
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Includes "The Crocodile!" by Theodore Roscoe.
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Includes "Gild The Sword With Gold" by Phil R. Sheridan
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Cover by Walter Popp. Includes "The Star Dice" by Roger Dee.
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Cover by John Howitt. Includes "The League Of War Monsters" by Curtis Steele.
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Includes "Murder Nightmare" by Norman A. Daniels.
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Cover by F. Tinsley. Includes "The Lancer Strikes" by George L. Eaton.
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Includes "The Shadow Over Innsmouth" by H. P. Lovecraft.
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Includes "Dream-Dust From Mars" by Manly Wade Wellman
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Cover by Hannes Bok. Includes "Beauty's Beast" by Robert Bloch.
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Cover by Schneeman. Includes "Worlds Don't Care" by Nat Schachner.
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Cover by Alex Schomburg. Includes "The White Widows" by Sam Merwin, Jr.
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Features "The Green Eagle" by Kenneth Robeson.
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Features novel "Black Daylight" by Wallace Brooker starring Captain Fury, a Doc Savage clone.
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Includes "Snowbirds" by Eldredge L. Mackay.
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"Patrol of the Iron Scourge" by Robert J. Hogan.
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Cover by H. W. Wesso. Includes "The Shadow In The Sky" by August W. Derleth.
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Includes "The Humanoids" by Jack Williamson. Cover by Anderson.
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Includes "The Lost World Of Time" by Edmond Hamilton.
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Cover by Lawrence. Includes "Death Crystal" by George O. Smith.
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Cover by Earle K. Bergey. Includes "The Man In The Iron Cap" by Murray Leinster.
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Includes "Yellow Man Of Evil".
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Cover painting by Howard V. Brown. Includes "The Shadow Out Of Time" by H.P. Lovecraft.
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Cover by Anderson. Includes "The Kingslayer" by L. Ron Hubbard.
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Features "The Speaking Stone" by Kenneth Robeson.
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Cover by Virgil Finlay. Includes "The Shuttered House" by August W. Derleth.
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Cover by Anderson. Includes "The Star Kings" by Edmond Hamilton.
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Cover by Virgil Finlay. Includes "Spotted Satan" by Otis A. Kline.
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Includes "Compliments Of The Author" by Henry Kuttner.
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Includes "The Day Of The Damned" by Curtis Steele.
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