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OPERATOR 5 Vol. 1 #4 (Popular, July, 1934)

Cover by John Howitt. Includes "The Melting Death" by Curtis Steele.

Cover by Rudolph Belarski. Includes "The Laws Of Chance" by Murray Leinster.

Cover by William Timmins. Includes "Doodad" by Ray Bradbury.

Features "The Invisible Box Murders" by Kenneth Robeson.

Includes "Drums Of Khartoum" by E. Hoffman Price.

Includes "The Money Master" by Maxwell Grant.

Cover by Gilmore. Includes "Cold" by Nat Schachner.

Cover by Anderson. Includes "The Kingslayer" by L. Ron Hubbard.

Features "Vengeance Bay" by Maxwell Grant.

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

Cover by Earle K. Bergey. Includes "The Hollow World" by Frank Belknap Long.

Rare.

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

Includes "Son Of Two Worlds" by Edmond Hamilton.

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

Includes "Journey To Barkut" by Murray Leinster.

Cover by Pete Kuhlhoff. Includes "The Man Who Cried 'Wolfe'!" by Robert Bloch.

Cover by Margaret Brundage. Includes "The Grinning Ghoul" by Robert Bloch.

Cover by Lee Brown Coye. Includes "Notebook Found In A Deserted House" by Robert Bloch.

Cover by William Timmins. Includes "Ghost" by Henry Kuttner.

Title changes to CAPTAIN SATAN with Vol. 1 #3. Includes "The Corpse With The Third Eye" by Paul Ernst.

Includes "The Other World" by Murray Leinster.

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

Cover by John Newton Howitt. Includes "Master Of Monsters" by John M. Knox.

Cover by Virgil Finlay. Includes "Slime" by Joseph Payne Brennan

Includes "Man Alive!" by Frederick C. Painton.

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

Cover by Margaret Brundage. Includes "Thunder In The Dawn" by Henry Kuttner.

Cover by Rudolph Belarski. Includes Black Bat story "Death For Charity" by G. Wayman Jones.

"The Death Master's Last Patrol" by Robert J. Hogan.

Cover by Earle K. Bergey. Includes "Strangers On The Heights" by Manly Wade Wellman.

Includes Williamson, Wellman.

Includes "Gild The Sword With Gold" by Phil R. Sheridan

Cover by Virgil Finlay. Includes "The Return Of Hastur" by August W. Derleth.

Final issue. "Wings of the Death Tiger" by Robert J. Hogan.

Cover by Margaret Brundage. Includes "The Jest Of Droom Avista" by Henry Kuttner.

Final issue.

"Hordes of the Wingless Death" by Robert J. Hogan.

Includes "Death's Masquerade" by Maxwell Grant.

Includes "Beyond Infinity" by Chan Corbett.

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

Includes "Assignment In Guana" by George Harmon Coxe.

Includes "Death In A Cockpit" by Arthur J. Burks.

Cover by Rudolph Belarski. Includes "O'Leary's Byno-Blaster" by Arthur Guy Empy.

Cover by H. W. Brown. Includes "The Tramp" Part 2 by L. Ron. Hubbard.

Cover by F. Tinsley. Includes "The White Pygmy" by George L. Eaton.

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

Includes "12 Must Die" by Zorro.

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

Cover by Rogers. Includes "Final Blackout" Part 1 by L. Ron Hubbard.

Cover by Ed Valigursky. Includes "The Snows Of Ganymede" by Poul Anderson.

Includes "Hitler's Secret Terror" by J. Forman & Ro. Carse.

Cover by Hannes Bok. Includes "Mannikins Of Horror" by Robert Bloch.

Cover by John Howitt. Includes "The Army Of The Dead" by Curtis Steele.

Cover by Boris Dolgov. Includes "Quest Of The Gazolba" by Clark Ashton Smith.

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

Cover by John Howitt. Includes "Empire Of Doom" by Grant Stockbridge.

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

Includes "The Fifth Face" by Maxwell Grant.

Includes "The Magician Of Mars" by Edmond Hamilton.

Final issue. Cover by Virgil Finlay. Includes "De Brignac's Lady" by Kirk Washburn. Digest size.

Cover by John Howitt. Includes "The Wheel Of Death" by R. T. M. Scott.

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

Final issue thus. Continuing as STREET & SMITH'S AIR TRAILS.

Includes "Miracle Of The Golden Princess" by HBedford-Jones.

Includes "The Perilous Pearl" by H. Bedford-Jones.

Cover by H. W. Brown. Includes "The Tramp" Part 3 by L. Ron Hubbard.

"Flight of the Death Battalion" by Robert J. Hogan.

"The Mystery of the Golden Skull" by Donald E. Keyhoe.

"Bloody Wings for a Sky Hawk" by Robert J. Hogan.

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

Short-lived companion magazine to Saucy Stories and Saucy Movie Tales.

Includes "Mystery On Happy Bones" by Kenneth Robeson.

Includes "Town Marshall" by Walt Coburn.

Cover by Earle K. Bergey. Includes "Other Eyes Watching" by Polton Cross.

Cover by Boris Dolgov. Includes "Serpent Princess" by Edmond Hamilton.

Includes "The Humanoids" by Jack Williamson. Cover by Anderson.

Cover by Ed Cartier. Includes "Death's Deputy" by L. Ron Hubbard.

Includes "The Crime Laboratory" by Grant Stockbridge.

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

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

Two alternate covers are known to exist.

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

Cover by Schneeman. Includes "Neutral Vessel" by Harl Vincent.

"Squadron of the Damned" by Robert J. Hogan.

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

Includes "The Sky Walker" by Kenneth Robeson.