Number 1 edit
January 1941
- John Carter and the Giant of Mars [Barsoom] • Edgar Rice Burroughs • novella (© Copyright Renewed: details pending.)
- The Invisible Wheel of Death • Don Wilcox • novelette
- Mystery Moon • Edmond Hamilton • novelette
- The Armageddon of Johann Schmidt • Arthur T. Harris • short story
- Hammer of the Gods • John York Cabot • short story
- Skidmore's Strange Experiment • David Wright O'Brien • short story
- A City on Venus • Henry Gade • vignette
Number 2 edit
February 1941
- Battering Rams of Space [Lester Allison] • Don Wilcox • novella
- The Last Analysis • John York Cabot • short story
- Adam Link in the Past [Adam Link] • Eando Binder • novella (© Copyright Renewed: details pending.)
- The Accidental Murders • Robert Moore Williams • short story
- The Stillwell Degravitator [Professor Stilwell] • Charles R. Tanner • short story
- The Winking Lights of Mars • Otto Binder • short story (© Copyright Renewed: details pending.)
- A City on Jupiter • Henry Gade • vignette
Number 3 edit
March 1941
- The City of Mummies [Barsoom] • Edgar Rice Burroughs • novella (© Copyright Renewed: details pending.)
- The Man Who Lived Next Week • David Wright O'Brien • novelette
- Murder in the Past • John York Cabot • short story
- Hok and the Gift of Heaven [Hok] • Manly Wade Wellman • novelette
- Phoney Meteor • John Beynon • novelette
- The Lost Colony—A Strange Civilization in the Heart of the Superstition Mountains • James Norman • short story
- Mystery of the Amazing Battery [Oscar Wilbury] • Donald Bern • short story
- A City on Neptune • Henry Gade • vignette
Number 4 edit
April 1941
- Lords of the Underworld • L. Taylor Hansen • novella
- King Arthur's Knight in a Yankee Court [Time Swing] • A. W. Bernal • novelette
- Big Man • Ross Rocklynne • novelette (© Copyright Renewed: details pending.)
- Priestess of the Sleeping Death • Neil R. Jones • novelette
- Invisible Raiders of Venus • Don Wilcox • short story
- Killer's Turnabout • William P. McGivern • short story
- A City on Uranus • Henry Gade • vignette
Number 5 edit
May 1941
- The Lost Race Comes Back • Don Wilcox • novella
- Lone Wolf of Space • Joseph J. Millard & A. R. Steber • novelette
- Adam Link Faces a Revolt [Adam Link] • Eando Binder • novelette (© Copyright Renewed: details pending.)
- The Man Who Forgot • John York Cabot • short story
- The Iron Men of Super City [Ben Gleed] • Don Wilcox • novelette
- The Fate of Asteroid 13 • William P. McGivern • short story
- Dictagraphs of Death • P. F. Costello • novelette
- Secret of the Lost Planet • David Wright O'Brien • novelette
- Rocky Gordon's Billion-Dollar Trap • Robert Moore Williams • short story
- Return of the Space Hawk • Duncan Farnsworth • novelette
- The Strange Adventure of Victor MacLiesh • Alexander Blade • novelette
Number 6 edit
June 1941
- Black Pirates of Barsoom [Barsoom] • Edgar Rice Burroughs • novella (© Copyright Renewed: details pending.)
- Lost Treasure of Angkor • James Norman • novelette
- The Girl from Venus • David V. Reed • short story
- The Quandary of Quintus Quaggle • William P. McGivern • short story
- Pepper Pot Planet • Duncan Farnsworth • short story
- Homer Higginbottom, Rain Maker [Homer Higginbottom] • Milton Kaletsky • novelette
- A City on Pluto • Henry Gade • vignette
Number 7 edit
July 1941
- Survivors from 9000 B.C. • Robert Moore Williams • novella
- Mystery on Planetoid Ten • James Norman • novelette
- No Man's Land in Space • Leigh Brackett • novelette
- Sidetrack in Time • William P. McGivern • short story
- Ten Seconds from Nowhere • David Wright O'Brien • short story
- The Invincible Crime-Buster • Henry Gade • novelette
- A City on Io • Henry Gade • vignette
Number 8 edit
August 1941
- Yellow Men of Mars [Barsoom] • Edgar Rice Burroughs • novella (© Copyright Renewed: details pending.)
- Kid Poison • David V. Reed • novelette
- Mr. Muddle Does as He Pleases • William P. McGivern & David Wright O'Brien • novelette
- You Ought to Be Dead • Robert Moore Williams • short story
- The Man Who Got Everything • John York Cabot • short story
- Taxi to Jupiter • Don Wilcox • short story
- A City on Saturn • Henry Gade • vignette
Number 9 edit
September 1941
- Enchantress of Lemuria • Stanton A. Coblentz • novella
- Mutiny in Space • Jep Powell • short story
- Ferdinand Finknodle's Perfect Day • David Wright O'Brien • novelette
- The Throne of Valhalla • Arthur T. Harris • novelette
- Yellow Mud for Cowards • P. F. Costello • short story
- Mystery of the Mummy • Duncan Farnsworth • short story
- Dr. Loudon's Armageddon • Alexander Blade • short story
- A City on Mercury • Henry Gade • vignette
Number 10 edit
October 1941 (transcription project)
- Invisible Men of Mars [Barsoom] • Edgar Rice Burroughs • novella (© Copyright Renewed: details pending.)
- The World of Miracles • David V. Reed • short story
- Kidnaped in Mars [Don Hargeaves] • Festus Pragnell • novella
- Sergeant Shane of the Space Marines [Sergeant Shane] • John York Cabot • short story
- Flame for the Future • P. F. Costello • short story
- Mystery of the Martian Pendulum • Thornton Ayre & A. R. Steber • novelette
- A City on the Moon • Henry Gade • vignette
Number 11 edit
November 1941 (start transcription)
- Convoy to Atlantis • William P. McGivern • novella
- Nicolbee's Nightmare • John York Cabot • short story
- The Stevedore of Jupiter • Don Wilcox • short story
- Death Desert • Robert Moore Williams • short story
- The Short-Wave Superman • Robert Leslie Bellem • short story
- Armageddon, 1948 • Ed Earl Repp • novelette
- A City on Titan • Henry Gade • vignette
Number 12 edit
December 1941 (transcription project)
- The Secret of Planetoid 88 • Ed Earl Repp • novella
- Bandits of Time • Ray Cummings • novelette
- Rayhouse in Space • Duncan Farnsworth • novelette
- The Odds on Sergeant Shane [Sergeant Shane] • John York Cabot • short story
- Planet of Lost Men • P. F. Costello • short story
- The Man Who Wasn't Himself • Alexander Blade • short story
- A City on Callisto • Henry Gade • vignette