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Includes "Large Flying Boats VS. Large Land Planes" by Igor I. Sikorsky.
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Includes "The Triumph Of Captain Future" by Edmond Hamilton.
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"Bombs from the Murder Wolves" by Robert J. Hogan.
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Cover by Margaret Brundage. Includes "The Suicide In The Study" by Robert Bloch.
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Cover by Earle K. Bergey. Includes "The Hollow World" by Frank Belknap Long.
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Cover by John Howitt. Includes "Cavern Of The Damned" by Curtis Steele.
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Includes "And So To Death" by Cornell Woolrich.
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Cover by F. Tinsley. Includes "Europe Preens Her Wings" by Clyde Pangborn.
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Cover by John Howitt. Includes "The League Of War Monsters" by Curtis Steele.
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Features "Blood Donor Boomerang" by Frederick C. Davis.
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Includes "The Seven Sleepers" by Henry Kuttner & A.. Barnes.
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Cover by F. Tinsley. Includes "Aviation Cades And The U. S. Fleet" by John R. Hoyt.
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Cover by Matt Fox. Includes "The Testament Of Clairborne Boyd" by August Derleth.
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Cover by John Howitt. Includes "Reign Of The Death Fiddler" by Grant Stockbridge.
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Cover by Ray Quigley. Includes "Masquerade" by Henry Kuttner.
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"White Wings for the Dead" by Robert J. Hogan.
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Continuing from CAPTAN SATAN.
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Includes "The Three Planeteers" by Edmond Hamilton.
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"Death Rides the Lost Patrol" by Robert J. Hogan.
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Includes "Power For Zenovia" by Willard E. Hawkins.
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Includes "The Dual World" by Arthur K. Barnes.
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Cover by Rogers. Includes "Gray Lensman" Part 2 by E. E. Smith, Ph.D.
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Cover by Alex Schomburg. Includes "Death Of Iron" by S. S. Held.
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Includes "The Space Beasts" by Clifford D. Simak.
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Final issue. Cover by H.W. Wesso. Includes "The Cairn On The Headland" by Robert E. Howard.
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Cover by John Howitt. Includes "The Wheel Of Death" by R. T. M. Scott.
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Cover by Earle K. Bergey. Includes "The Star Of Dread" by Brett Sterling.
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Cover by Earle Bergey. Includes "Lord Of The Storm" by Keith Hammond.
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Cover by Matt Fox. Includes "The Underbody" by Allison V. Harding.
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Includes a 16-page color comics section.
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Cover by F. Tinsley. Includes "Nests For Sea-Hawks" by Arch Whitehouse.
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Cover by C.C. Serf. Includes "Black Chant Imperial" by Robert E. Howard.
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"Three Fly With Satan" by Robert J. Hogan.
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Cover by Walter Popp. Includes "The Conditioned Captain" by Fletcher Pratt.
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Cover by Lee Brown Coye. Includes "The Watcher From The Sky" by August Derleth.
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Includes "Hang Him High" by Norbert Davis.
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Cover by F. Tinsley. Includes "The Black Hawk" by George L. Eaton.
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Cover by Lee Brown Coye. Includes "Four From Jehlam" by Allison Harding.
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Cover by John Howitt. Includes "King Of The Red Killers" by Grant Stockbridge.
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Includes "12 Must Die" by Zorro.
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Includes "The Spider At Bay" by Grant Stockbridge.
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Includes Williamson, Simak.
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Includes "The Sky Walker" by Kenneth Robeson.
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Includes "The Survivor" by H. P. Lovecraft & August Derleth. Digest size.
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Includes "Purpose" by Ray Bradbury. Cover by Earle Bergey.
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Features "Suicide Trail" by Clifford Goodrich.
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Cover by Margaret Brundage. Includes "Beyond The Threshold" by August W. Derleth.
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Includes "Citadel Of Lost Ships" by Leigh Brackett.
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Includes "Black Fire" by Walt Coburn.
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Cover by Earle K. Bergey. Includes "The Portal In The Picture" by Henry Kuttner.
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Cover by John Howitt. Includes "Reign Of The Silver Terror" by Grant Stockbridge.
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Includes "Shoot First-Our Navy Is Ready!" by Corey Beckwith.
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Cover by Earle K. Bergey. Includes "A Yank At Valhalla" by Edmond Hamilton.
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Includes "Webbed Hands" by Ferdinand Berthoud.
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Cover design by C.C. Serf. Includes "The Hyena" by Robert E. Howard.
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Cover by John Howitt. Includes "The Flame Master" by Grant Stockbridge.
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Includes Williamson, Wellman.
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Includes "The Haunt" by Theodore Sturgeon.
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Includes "Planet Of The Small Men" by Murray Leinster.
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Cover by J. Allen St. John. Includes "Bucaneers Of Venus (Part 1)" by Otis Adelbert Kline.
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Cover by Margaret Brundage. Includes "A Wig For Miss Devore" by August Derleth.
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Includes "The Black Flame" by Stanley G. Weinbaum
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Includes "The Case Of The Yellow Mask".
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Cover by W. H. Silvey. Includes "The Place In The Woods" by August Derleth. Digest size.
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Two alternate covers are known to exist.
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Final issue. Cover by Earle K. Bergey. Includes "Days Of Creation" by Brett Sterling.
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Cover by F. Tinsley. Includes "The Curse Of The Killer" by George L. Eaton.
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Cover by Earle K. Bergey. Includes "The Man In The Iron Cap" by Murray Leinster.
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Cover by John Howitt. Includes "Patriot's Death Battalion" by Curtis Steele.
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