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OPERATOR 5 Vol. 1 #2 (Popular, May, 1934)

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

Includes "Asylum Satellite" by Fletcher Pratt.

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

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

Cover by J. Allen St. John. Includes "The Opener Of The Way" by Robert Bloch.

Cover by Matt Fox. Includes "The Dweller In Darkness" by August Derleth.

Continuing from DETECTIVE-DRAGNET.

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

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

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

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

Includes "Pink Diamonds" by Joel Townsley Rogers.

Features novel "Black Daylight" by Wallace Brooker starring Captain Fury, a Doc Savage clone.

Cover by F. Tinsley. Includes "The Man Who Fell From The Skies'" by George L. Eaton.

Cover by F. Tinsley. Includes "Europe Preens Her Wings" by Clyde Pangborn.

Includes "Yellow Man Of Evil".

Includes "Rule Of The Torture Lash" by Gordon Keyne.

Features "Alibi Trail" by Maxwell Grant.

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

Includes "Quicksands Of Youthwardness" by Malcolm Jameson.

Cover by J. Allen St. John. Includes "Bucaneers Of Venus (Part 2)" by Otis Adelbert Kline.

Features "The Goblins" by Kenneth Robeson.

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

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

Final issue.

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

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

Includes "Beyond Infinity" by Chan Corbett.

Features "Murder Lake" by Maxwell Grant.

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

Includes "Nazi Terror Over New York" by Robinson MacLean.

Includes "The Prisoner Of Mars" by Edmond Hamilton.

Cover by John Howitt. Includes "Slaves Of The Crime Master" by Grant Stockbridge.

Includes "The Lady Is A Witch" by Norman A. Daniels.

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

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

Includes "The Cructars Are Coming!" by Paul Lawrence Payne. Cover by Anderson.

Cover by Earle K. Bergey. Includes "The Kid From Mars" by Oscar J. Friend.

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

Includes "The Space Beasts" by Clifford D. Simak.

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

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

Only issue.

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

Cover by William Timmins. Includes "Nothing But Gingerbread Left" by Henry Kuttner.

Includes "Dawn Of Flame" by Stanley G. Weinbaum.

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

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

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

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

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

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

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

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

Cover by Margaret Brundage. Includes "The Feast In The Abbey" by Robert Bloch.

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

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

Includes "Brethren Of Death" by George L. Eaton.

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

Includes "Heredity" by Isaac Asimov.

Cover by John Howitt. Includes "The Mad Horde" by Grant Stockbridge.

Includes "The Fortress Of Utopia" by Jack Williamson

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

Features "The Awful Dynasty" by Kenneth Robeson.

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

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

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

Includes a 16-page color comics section.

Includes "Always Comes Evening" by R.E. Howard.

"Cargo Unknown" by Kenneth Robeson.

Cover by Graves Gladney. Features "Black Destroyer" by A. E. van Vogt and includes "Trends" by Isaac Asimov.

Features "The Speaking Stone" by Kenneth Robeson.

Cover by Margaret Brundage. Includes "Iron Mask" by Robert Bloch.

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

Cover by Rogers. Includes "Universe" by Robert Heinlein.

Cover by Rogers. Includes "Salvage" by Vic Phillips

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

Includes "The Lonely Planet" by Murray Leinster.

Includes "The Mystery Of Voodoo Manor" by Florence M. Pettee.