Features "The All-White Elf" by Kenneth Robeson.

"Wings of the White Death" by Robert J. Hogan.

Cover by Graves Gladney. Includes "Hermit Of Mars" by Clifford D. Simak.

Includes "The Dawn-Seekers" by Frederick C. Painton.

Final issue.

"Wings of the Hawks of Death" by Robert J. Hogan.

Includes "The Mental Monster" by Kenneth Robeson.

Cover by Rogers. Includes "Slan" part 2 by A. E. van Vogt.

Includes "We Fly The Silvaire De Luxe" by William Winter.

Cover by Earle K. Bergey. Includes "What Mad Universe" by Fredric Brown (first published appearance of this novel).

The early issues were published in the format of Macfadden's "true story" magazines. To add versimilitude, the magazine was illustrated with double-exposure photographs and the stories often carried double bylines in the form "by X as told to Y," where X

Final issue.

Cover by Rogers. Includes "Gray Lensman" Part 2 by E. E. Smith, Ph.D.

Cover by Margaret Brundage. Includes "Queen Of The Black Coast" by Robert E. Howard.

Includes "Merchants of Disaster" by Kenneth Robeson

Includes a 16-page color comics section.

Cover by Rogers. Includes "Second Stage Lensmen" part 2 by E. E. Smith, Ph.D.

Cover by Walter Popp. Includes "The Wages Of Synergy" by Theodore Sturgeon.

Final issue.

"Death Is My Destiny" by Robert J. Hogan.

Includes "The Northdale Mystery" by Maxwell Grant.

Cover by Rogers. Includes "Sixth Column" by Anson MacDonald.

Final issue.

Includes "The Bride Of Osiris (Part 1)" by Otis Adelbert Kline.

Cover by John Howitt. Includes "The Invisible Empire" by Curtis Steele.

Cover by John Howitt. Includes "The Bloody Forty-Five Days" by Curtis Steele.

Features "Suicide Trail" by Clifford Goodrich.

Cover by Alex Schomburg. Includes "The Houses Of Iszm" by Jack Vance.

Cover by John Howitt. Includes "Wings Of The Black Death" by Grant Stockbridge.

Cover by John Howitt. Includes "Legions Of The Death Master" by Curtis Steele.

Includes "The Prince Of Evil" by Maxwell Grant.

Features "Blood Donor Boomerang" by Frederick C. Davis.

Features "Gems of Doom" by Maxwell Grant.

Cover by C. C. Serf. Includes "King Of The Night" by Robert E. Howard.

Cover by Harold S. DeLay. Includes "In The Walls Of Eryx" by Kenneth Sterling & H. P. Lovecraft.

Features "Undermost" by Manly Wade Wellman and "Rocket Skin" by Ray Bradbury.

Includes "Invasion From The Sky" by Curtis Steele.

Cover by John Howitt. Includes "Emperor Of The Yelloe Death" by Grant Stockbridge.

Small digest size format.

"Patrol of the Sky Vulture" by Robert J. Hogan.

Includes "The Magician Of Mars" by Edmond Hamilton.

Cover by Harold S. DeLay. Includes "Dragon Moon" by Henry Kuttner.

Features "Vengeance Bay" by Maxwell Grant.

Cover by H. W. Scott. Includes "Slaves Of Sleep" by L. Ron Hubbard.

Cover by Belarski. Includes "The Ringer" by Charles Rice McDowell.

Includes "City Of Flaming Shadows" by Grant Stockbridge.

Includes "Sir Greaseball" by George Bruce. Cover by E.M. Frandzen.

First appearance of a Tarzan-like character named Ka-Zar. Cover painting by J. W. Scott. Includes "King Of Fang And Claw" by Bob Byrd.

Includes "The Voice Of The Lobster" by Henry Kuttner.

"Death to the Hawks of War" by Robert J. Hogan.

Cover by F. Tinsley. Includes "The Baby Albatross" by Frank Tinsley.

"The Patrol to End the World" by Robert J. Hogan.

Cover by Rogers. Includes "Final Blackout" Part 2 by L. Ron Hubbard.

Cover by A. R. Tilburne. Includes "Bang! You're Dead" by Ray Bradbury.

"Flying Coffins of the Damned" by Robert J. Hogan.

Death Had Yellow Eyes, digest size.

"The Mystery of the Dragon's Shadow" by Donald E. Keyhoe.

Includes "The Quest of Qui" by Kenneth Robeson.

Includes "Hang Him High" by Norbert Davis.

Continuing from ORIENTAL STORIES. Cover design by Brundage. Includes "The Master Of Dragons" by H. Bedford Jones.

Cover by Boris Dolgov. Includes "Lizzie Borden Took An Axe" by Robert Bloch.

Cover by Earle Kulp Bergey. Includes "Dragon's Island" by Jack Williamson.

Continuing from AIR ACTION.

Cover by F. Tinsley. Includes "The Blood-Red Road To Petra" by George L. Eaton.

Cover by H. W. Wesso. Includes "People Of The Dark" by Robert E. Howard.

Two alternate covers are known to exist.

Cover by A. von Munchhausen. Features "Lunar Landing" by Lester Del Ray and "The Beast" by L. Ron Hubbard.

Cover by Rogers. Includes "Magic City" by Nelson S. Bond.

Includes "Northward Rails" by Frank Bunce.

"The Black Buzzard Flies to Hell" by Robert J. Hogan.

Final issue. Cover by Earle K. Bergey. Includes "Days Of Creation" by Brett Sterling.

Includes "Captain Future's Challenge" by Edmond Hamilton.

Cover by W. H. Silvey. Includes "The House In The Valley" by August Derleth.

Includes "The Onslaught From Rigel" by Fletcher Pratt.

Includes "Code Of The Sky" by Major George F. Eliot.

Cover by H. W. Scott. Includes "Sinister Barrier" by Eric Frank Russell.

Cover by A. R. Tilburne. Includes "The Beasts Of Barsac" by Robert Bloch.

Includes "Winged Warriors" by Lieut. Scott Morgan

Cover by Emsh. Includes "Cholwell's Chickens" by Jack Vance.

Includes "Purple Aces" by Robert J. Hogan.

Formerly Detective Mystery.

Features "Mystery Island" by Kenneth Robeson.

Final issue.

Includes "Blow Cold, Blow Hot" by Frederick C. Davis.

Only issue. Cover by Joseph Chenoweth. Includes "Gods Guard The Brave" by H. Bedford Jones.

Cover by Earle K. Bergey. Includes "The Visitor" by Ray Bradbury.

Cover by George Rozen. Includes "The Sky Hawk Screams" by Arthur Guy Empy.

Includes "Captain Future and the Seven Space-Stones" by Edmond Hamilton.

Cover by Jack Coggins. Includes "Turncoat" by Damon Knight

Cover by Jerome Rozen. Includes "The Masked Invasion" by Curtis Steele.

Cover by F. Tinsley. Includes "High School Pilots" by R. Kermit Hewes.

Includes "The Time Machine" by H. G. Wells. Cover by Anderson.

Includes " Voice Of Death" by Maxwell Grant.

Cover by Rogers. Includes "Recruiting Station" by A. E. van Vogt.