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OPERATOR 5 Vol. 6 #3 (Popular, February, 1936)

Cover by John Howitt. Includes "Rockets From Hell" by Curtis Steele.

Includes "12 Must Die" by Zorro.

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

Final issue.

Cover by John Howitt. Includes "Satan's Death Blast" by Grant Stockbridge.

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

Cover by John Howitt. Includes "Citadel Of Hell" by Grant Stockbridge.

"The Black Wings of the Raven" by Robert J. Hogan.

Cover by F. Tinsley. Includes "The Black Hawk" by George L. Eaton.

Cover by Henry Stahlhart. Includes "The Riddle Of Flying Aptitude" by Lieut. W. M. Wood.

Death Had Yellow Eyes, digest size.

Includes "The Spider And The Raceless One" by Grant Stockbridge.

Cover by Margaret Brundage. Includes "A Wig For Miss Devore" by August Derleth.

Includes "Sands Of Sahara" by Robert Carse.

Cover by John Howitt. Includes "March Of The Flame Marauders" by Curtis Steele.

"The Men Who Smiled No More" by Kenneth Robeson.

Cover by Rogers. Features "Briddle and Saddle" by Isaac Asimov and "The Slaver" by L. Ron Hubbard.

"The Terror in the Navy" by Kenneth Robeson.

Final issue.

Includes "Wine Of The Dreamers" by John D. MacDonald.

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

Includes "Murder Nightmare" by Norman A. Daniels.

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

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

Includes "Dream-Dust From Mars" by Manly Wade Wellman

Only issue.

Cover by Jack Coggins. Includes "Booby Prize" by George O. Smith.

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

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

"Red Wings for the Death Patrol" by Robert J. Hogan.

Cover by Rogers. Includes "There Shall Be Darkness" by C. L. Moore.

"Here Flies the Hawk of Hell" by Robert J. Hogan.

"Wings of the Iron Claws" by Robert J. Hogan.

Features "Suicide Trail" by Clifford Goodrich.

Includes "The Dual World" by Arthur K. Barnes.

25th anniversary issue. Cover by Jack Coggins. Includes "Time Pawn" by Philip K. Dick.

Includes "The Mental Monster" by Kenneth Robeson.

Final issue.

Cover by Jerome Rozen. Includes "The Case Of The Six Coffins" by Robert J. Hogan.

Cover by Rudolph Belarski. Includes "The Water World" by Oscar J. Friend.

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

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

Cover by Rogers. Includes "Forces Must Balance!" by Manly Wade Wellman.

Final issue.

Cover by Virgil Finlay. Includes "From Beyond" by H. P. Lovecraft.

Includes "Mystery On Happy Bones" by Kenneth Robeson.

Cover by Hugh Rankin. Includes "The Hills Of The Dead" by Robert E. Howard.

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

Continuing from AIR ACTION.

Cover by Anthony Di Giannurio. Includes "Black As The Night" by Alice Farnham.

Cover by Virgil Finlay. Includes "The Lost Path" by August Derleth.

Cover by Lee Brown Coye. Includes "The Whippoorwills In The Hills" by August Derleth.

Cover by Richard Bennett. Includes "Nursemaid To Nightmares" by Robert Bloch.

Cover by Margaret Brundage. Includes "Three Gentlemen In Black" by August W. Derleth.

Cover by J. Allen St. John. Includes "The Haunter Of The Dark" by H. P. Lovecraft.

Includes "The Jumper" by Theodore Sturgeon.

Features "Alibi Trail" by Maxwell Grant.

Includes "The Day Of The Cloud" by Ross Rocklynne.

Final issue.

Cover by John Giunta. Includes "The Trail Of Cthulhu" by August Derleth.

Cover by Rogers. Includes "Salvage" by Vic Phillips

Includes "Snowbirds" by Eldredge L. Mackay.

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

Includes "Can Ground Defenses Project US?" by Lieut. W. M. Wood.

Cover by John Howitt. Includes "Reign Of The Death Fiddler" by Grant Stockbridge.

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

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

Features "The Running Skeletons" by Kenneth Robeson.

Includes "Citadel Of Lost Ships" by Leigh Brackett.

Cover by Earle Bergey. Includes "Lord Of The Storm" by Keith Hammond.

Cover by Earle K. Bergey. Includes "A Million Years To Conquer" by Henry Kuttner.

Includes "Murder Goes To Sea" by Allan R. Bosworth.

Includes "Brand Of The Black Bat" by G. Wayman Jones. Introduction and 1st appearance of The Black Bat.

Includes "Yellow Man Of Evil".

Includes " Voice Of Death" by Maxwell Grant.

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

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

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

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

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

Cover by Earle K. Bergey. Includes "When Shadows Fall" by L. Ron Hubbard.

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

Cover by Earle Bergey. Includes "Tough Old Man" by L. Ron Hubbard.

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

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

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

Includes "The Case Of The Friendly Corpse" by L. Ron Hubbard.

Cover by Earle Bergey. Includes "Absalom" by Henry Kuttner.

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

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

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

Includes "The Impossible World" by Eando Binder

Cover by J. Allen St. John. Includes "Moonlight On A Skull" by Robert E. Howard.

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

Includes "The Scarlet Blade" by Murray R. Montgomery.

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

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 Lonely Planet" by Murray Leinster.

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

Cover by Hannes Bok. Includes "The Ghost-Writer" by Robert Bloch.

Includes "The Land Of Time To Come" by Henry Kuttner.

Final issue.

Includes "Island In The Sky" by Manly Wade Wellman.

Includes "Frontier Planet" by Manly Wade Wellman.

Includes "Land Of The Burning Sea" by Malcolm Jameson.

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

Includes "The Living Equation" by Nat Schachner.

Cover by Earle K. Bergey. Includes "Hollywood On The Moon" by Henry Kuttner.

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

Includes "Invasion From The Sky" by Curtis Steele.

Features "Peril in the North" by Kenneth Robeson.

Includes "Large Flying Boats VS. Large Land Planes" by Igor I. Sikorsky.