Includes "The Day To Come" by Don Tracy.

Cover by Margaret Brundage. Includes "The Inverness Cape" by August Derleth.

Cover by John Howett. Includes "Vault Of The Damned" by Nat Schachner.

Cover by John Howitt. Includes "Reign Of The Silver Terror" by Grant Stockbridge.

"Wings of the Doomed" by Robert J. Hogan.

Includes "Mystery On Happy Bones" by Kenneth Robeson.

Cover by Rogers. Includes "Time Wants A Skeleton" by Ross Rocklynne.

Cover by John Howitt. Includes "King Of The Red Killers" by Grant Stockbridge.

Includes "The Shriveling Murders" by Zorro.

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

"Winged Beasts of Death" by Robert J. Hogan.

Cover by Schneeman. Includes "The Merman" by L. Sprague de Camp.

Cover by Hannes Bok. Includes "Beauty's Beast" by Robert Bloch.

Includes "Farewell To Balloon Racing" by Samuel Taylor Moore.

Includes "Purple Aces" by Robert J. Hogan.

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

Final issue. Cover by Emsh. Includes "Gateway To Paradise" by Jack Williamson.

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

Cover by Virgil Finlay. Features "Globe of Memories" by Seabury Quinn.

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

Features "The Time Terror" by Kenneth Robeson.

Includes "The Men Vanished" by Kenneth Robeson.

Includes "The Bat Staffel" by Robert J. Hogan.

Cover by Ed Cartier. Includes "The Reign Of Wizardry" by Jack Williamson.

Final issue.

Cover by Earle K. Bergey. Includes "The Portal In The Picture" by Henry Kuttner.

Final issue. Cover by H.W. Wesso. Includes "The Cairn On The Headland" by Robert E. Howard.

Includes "Gunswift" by Jack Byrne.

"Sky-Guns for the Murder Master" by Robert J. Hogan.

Includes "The Faceless Men" by Arthur Leo Zagat.

Cover by Virgil Finlay. Includes "Fane Of The Black Pharaoh" by Robert Bloch.

Includes "Pony Express Rider" by A. Leslie.

Includes "Air Cops In The Land Of The Shiek" by Edward Daly.

Cover by M. Isip. Includes "The Roaring Trumpet" by L. Sprague de Camp & Fletcher Pratt.

Includes "The Mind Magnet" by Paul Ernst.

Features "Murder Lake" by Maxwell Grant.

Cover by Margaret Brundage. Includes "The Fiddler's Fee" by Robert Bloch.

Cover by Pete Kuhlhoff. Includes "The Skull Of The Marquis De Sade" by Robert Bloch.

Includes "Murder Nightmare" by Norman A. Daniels.

Includes "He Didn't Like Cats" by L. Ron Hubbard.

Cover by Walter Popp. Includes "Big Planet" by Jack Vance.

Cover by Rogers. Includes "Asylum" by A. E. van Vogt.

Cover by Ed Emsh. Includes "The Spiral Of The Ages" by Fletcher Pratt.

Cover by Rudolph Belarski. Includes "The Bottom Of The World" by John Coleman Burroughs & Hulbert Burroughs.

Cover by Alex Schomburg. Includes "Death Of Iron" by S. S. Held.

Cover design by C.C. Serf. Includes "The Hyena" by Robert E. Howard.

Features "The Terrible Stork" by Kenneth Robeson.

Cover by Herbert Morton Stoops. Includes "Swords Of Mars" by Edgar Rice Burroughs.

Features "Bequest of Evil" by Kenneth Robeson.

Cover by Margaret Brundage. Includes "Lansing's Luxury" by August Derleth.

Cover by Alex Schomburg. Includes "The White Widows" by Sam Merwin, Jr.

Cover by Jack Coggins. Includes "Asylum Earth" by Bruce Elliott.

Cover by Graves Gladney. Includes "The Bronze Door" by Raymond Chandler. Only appearance of this short story.

Cover by John Howitt. Includes "The Pain Emperor" by Grant Stockbridge.

"The Sky Serpent Flies Again" by Robert J. Hogan.

Cover design by E.M. Stevenson. Includes "He" by H.P. Lovecraft.

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

Includes "The Quest Of Tarzan" by Edgar Rice Burroughs.

Final issue.

Final issue.

Summer issue. Includes "The Whispering Eyes".

Includes "The Crocodile!" by Theodore Roscoe.

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

"Fangs of the Winged Cobra" by Robert J. Hogan.

Cover by Emsh. Includes "Name Your Pleasure" by James E. Gunn.

Cover by John Howett. Includes "Devil's Sculptor" by Arthur J. Burks.

Features "Alibi Trail" by Maxwell Grant.

Cover by Margaret Brundage. Includes "The Black Kiss" by Robert Bloch & Henry Kuttner.

Cover by Brundage. Includes "The People Of The Black Circle (part 2) by Robert E. Howard, This is an early Conan story.

Includes "The Synthetic Men of Mars" by Edgar Rice Burroughs

Cover by H. W. Brown. Includes "Mercutian Adventure" by Raymond Z. Gallun.

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

Cover by William Timmins. Includes "The Weapon Shop" by A. E. van Vogt.

Includes "Her Lover-Death".

Cover by Virgil Finlay. Includes "The Drifting Snow" by August Derleth.

"Bombs from the Murder Wolves" by Robert J. Hogan.

Includes "The Crime Laboratory" by Grant Stockbridge.

Cover by William Timmins. Includes "Judgement Night" by C. L. Moore.

Includes "The Devil's Rescue" by L. Ron Hubbard.

Includes "The Shadow Men" by A. E. Van Vogt.

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

Cover art by Brundage. Includes "The People Of The Black Circle" by R.E. Howard.

Includes "Quicksands Of Youthwardness" by Malcolm Jameson.

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

Cover by Margaret Brundage. Includes "Slave Of The Flames" by Robert Bloch.

Cover by John Howitt. Includes "Prince Of The Red Looters" by Grant Stockbridge.

Cover by John Howitt. Includes "The Red Death" by Grant Stockbridge.

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

"Raiders of the Death Patrol" by Robert J. Hogan.

Cover by Margaret Brundage. Includes "Beyond The Black River" by Robert E. Howard.

Cover by Lee Brown Coye. Includes "The Watcher From The Sky" by August Derleth.

Cover by Rogers. Includes "Salvage" by Vic Phillips

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

Includes "Swooning Lady" by Kenneth Robeson.

Cover by Lee Brown Coye. Includes "Home To Mother" by Manly Wade Wellman.

Includes "Your Money's Worth In The Air" by Lieut. W. M. Wood.

Cover by Earle K. Bergey. Includes "The Great Ego" by Norman A. Daniels.

Final issue.

Cover by Frank Kelly Freas. Includes "The Dead Man" by Fritz Leiber, Jr.

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

Cover by Rogers. Includes "Crisis In Utopia" by Norman L. Knight.

Cover by Ed Emsh. Includes "Too Late For Eternity" by Bryce Walton.

Cover by Rogers. Includes "Jurisdiction" by Nat Schachner.

Cover by A. R. Tilburne. Includes "Satan's Phonograph" by Robert Bloch.

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

Includes "The Scarlet Widow" by Hugh B. Cave.

Cover by F. Tinsley. Includes "The Purple Fez" by George L. Eaton.

Final issue. Includes "Emeralds Of The Inca" by George Creel.

Final issue.

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

Two alternate covers are known to exist.

Cover by W. H. Silvey. Includes "The Place In The Woods" by August Derleth. Digest size.

Includes "We Bomb Tokyo!" by Jay Hamilton.

Cover by F. Tinsley. Includes "The Curse Of The Killer" by George L. Eaton.

Cover by A. R. Tilburne. Includes "The Tombstone" by Ray Bradbury.