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.

Cover by Earle Bergey. Includes "Don't Look Now" by Henry Kuttner.

Features "Vengeance Bay" by Maxwell Grant.

Includes "Snowbirds" by Eldredge L. Mackay.

Cover by Rogers. Includes "Old Man Mulligan" by P. Schuyler Miller.

Includes "The Northdale Mystery" by Maxwell Grant.

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

Includes "The Hornet And The Vulture" by Samuel Merwin.

"Scourge of the Sky Monster" by Robert J. Hogan.

Includes "Brothers Of The Gun" by Walt Coburn.

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

Final issue.

Includes "The Invincible Shiwan Khan" by Maxwell Grant.

Cover by Margaret Brundage. Includes "The Hour Of The Dragon" by Robert E. Howard.

"The Condor Rides With Death" by Robert J. Hogan.

Cover by F. Tinsley. Includes "Soaring And Gliding" by John Du Barry.

Includes "Guerilla Warrior" by Robert Carse.

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

Cover by H. W. Brown. Features "Voyage 13" by Ray Cummings and includes "The Dangerous Dimension" by L. Ron Hubbard.

Includes "Border Patrol" by Lieut. P. S. Lyons.

Cover by Earle K. Bergey. Includes "The Dark World" by Henry Kuttner.

"Wings of the Gray Phantom" by Robert J. Hogan.

Cover by Matt Fox. Includes "The Place With Many Windows" by Allison V. Harding.

Cover by Margaret Brundage. Includes "The Wand Of Doom" by Jack Williamson.

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

Cover by Earle Bergey. Includes "The Lake Of The Gone Forever" by Leigh Brackett.

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

Cover painting by Howard V. Brown. Includes "The Shadow Out Of Time" by H.P. Lovecraft.

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

Cover by Virgil Finlay. Includes "Towers Of Death" by Henry Kuttner.

Cover by Alex Schomburg. Includes "Passport To Pax" by Kendell Foster Crossen.

Includes "Webbed Hands" by Ferdinand Berthoud.

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

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

Cover by Earle K. Bergey.Includes "Blood On The Sun" by Hal K. Wells.

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

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

Cover by C.C. Serf. Includes "The Black Stone" by Robert E. Howard.

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

Features "The Rustling Death" by Kenneth Robeson.

Includes "The Sky Ring" by Maxwell Grant.

Includes "Yellow Man Of Evil".

Cover by Evan Singer. Digest size. Includes "Brenda" by Margaret St. Clair.

Includes "The Museum Murders" by Maxwell Grant.

Includes "Merchants of Disaster" by Kenneth Robeson

Cover by Earle K. Bergey. Includes "The Star Of Dread" by Brett Sterling.

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

Includes "Dodging Clouds In Mexico" by Major Bernard A. Law.

Only issue.

Includes "Star Trail To Glory" by Edmond Hamilton.

Cover by Virgil Finlay. Includes "The Shuttered House" by August W. Derleth.

Cover by Virgil Finlay. Includes "Spotted Satan" by Otis A. Kline.

Features "Messenger of Death" by Maxwell Grant.

Cover by A. R. Tilburne. Includes "The Valley Of The Assassins" by Edmond Hamilton.

Includes "The Ether Robots" by Frank Belknap Long

Final issue.

Includes "The Crocodile!" by Theodore Roscoe.

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

Features "Alibi Trail" by Maxwell Grant.

Includes "The Spider At Bay" by Grant Stockbridge.

Cover by J. Allen St. John. Includes "Buccaneers Of Venus (Part 3)" by Otis Adelbert Kline.

Cover by Cartier. Includes "Lest Darkness Fall" by L. Sprague de Camp.

Includes "The Impossible World" by Eando Binder

Cover by William Timmins. Includes "Clash By Night" by Lawrence O'Donnell.

Cover by Margaret Brundage. Includes "The Shunned House" by H. P. Lovecraft.

Cover by Earle Bergey. Includes "Earthmen No More" by Edmond Hamilton.

Includes "The Deadly Swarm" by Edwin K. Sloat.

Cover by Margaret Brundage. Includes "The Shadow On The Screen" by Henry Kuttner.

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

Features "Silver Mountain" by Steuart M. Emery.

Cover by Matt Fox. Includes "The Cheaters" by Robert Bloch.

Cover by Graves Gladney. Includes "The Ghoul" by L. Ron Hubbard.

Cover by Matt Fox. Includes "The Ormolu Clock" by August Derleth.

Final issue.

Cover by Margaret Brundage. Includes "Jewels Of Gwahlur" by Robert E. Howard.

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

Final issue.

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

Features "Suicide Trail" by Clifford Goodrich.

Includes "Northward Rails" by Frank Bunce.

Cover by Ed Emsh. Includes "The Naked Sky" by James E. Gunn.

Cover by Margaret Brundage. Includes "The Mandarin's Canaries" by Robert Bloch.

Dan Dunn Detective Magazine was an attempt to capitalize on the popularity of comic-strip characters by placing them in pulp stories. It lasted a mere two issues. Full length novel: "Death Before Midnight" by James M. Calvert, Jr.

Includes "Calling Captain Future" by Edmond Hamilton.

Cover by Margaret Brundage. Includes "The Avenger From Atlantis" by Edmond Hamilton.

Cover by Michael Labonski. Includes "One Foot And The Grave" by Theodore Sturgeon.

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

Cover by Margaret Brundage. Includes "Red Nails" by Robert E. Howard.

Includes "The Men Vanished" by Kenneth Robeson.

Includes "Option On Eldorado" by Frederick C. Davis.

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

Includes "The Devil's Paymaster" by Maxwell Grant

Cover by Margaret Brundage. Includes "The Devil In Iron" by Robert E. Howard.

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

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

Includes "Give Me Ten Men" by Charles Marquis Warren.