lJanvier 1940
Couverture d'Howard Brown

Revolt Against Life • Frederic Arnold Kummer, Jr.  
Via Pyramid [*Via] • Gordon A. Giles • ss
Song at Twilight • Robert Arthur • nv
The Eternal Light • Robert Moore Williams 
Conquistadores from Beyond • Nicholas E. Kenealy 
Waters of Death • Eando Binder • vi
The Day of the Conquerors • Manly Wade Wellman • nv

Fιvrier 1940
Couverture d'Howard Brown

The Lightning Men [*Rader] • John Coleman & Hulbert Burroughs • nv
Secret of the Cyclotron • Jackson Gregory, Jr. • 
Day of the Titans • Arthur K. Barnes • ss
The Thing from Antares • Myer Krulfeld • ss
True Confession • F. Orlin Tremaine • ss
Doom Over Venus • Edmond Hamilton • nv
The Great God Awto • Clark Ashton Smith • ss

Mars 1940
Couverture d'Howard Brown

The Time Cheaters • Eando Binder • nv
Renegade from Saturn • Raymond Z. Gallun • 
Via Sun [*Via] • Gordon A. Giles • ss
The Planet of Change • Manly Wade Wellman • 
Perfect Murder • H. L. Gold • ss
The Thought Materializer • Leo Sonderegger • 
Worlds Within Worlds • Frederic Arnold Kummer

Avril 1940
Couverture d'Howard Brown

The Tides of Time • Robert Moore Williams • nv
Sunward • Stanton A. Coblentz • ss
The Gift of Urs • Don Tracy • ss
Conquest by Fire • Ward Hawkins • nv
Beauty and the Beast • Henry Kuttner • ss
Science Is Golden [by Henry Kuttner & Arthur K. Barnes; *Pete Manx] • Kelvin Kent • ss
Roar of the Rocket • Oscar J. Friend • nv

Mai 1940
Couverture d'Howard Brown

Prisoner's Base • Nelson S. Bond • ss
Gems of Life • Eando Binder • ss
Tomorrow's Hero • Don Tracy • ss
Dictators of Creation • Edmond Hamilton • nv
The Thing that Killed • Paul Chadwick • ss
Dosage • Bill Brudy • ss
The Seven Sleepers • Arthur K. Barnes & Henry Kuttner • nv

Juin 1940
Couverture d'Howard Brown

Dr. Cyclops • Henry Kuttner • nv; Based on the movie script by Tom Kilpatrick.
The Isle of Changing Life • Edmond Hamilton • 
The Lunar Pit • Myer Krulfeld • ss
Red Moon • Frank Belknap Long, Jr. • ss
Parallel in Time • Nelson S. Bond • ss
Knight Must Fall [by Arthur K. Barnes; *Pete Manx] • Kelvin Kent • ss
The Sun Maker • Jack Williamson • nv

Juillet 1940
Couverture d'Howard Brown

Voyage to Nowhere • Alfred Bester • nv
The Machine Brain • David V. Reed • ss
Out of the Depths • H. L. Gold • ss
Romance Across the Ages • Willard E. Hawkins • 
Honeycombed Satellite • Helen Weinbaum • ss
Tangled Paths • Raymond Z. Gallun • ss
The Experiment of Dr. Sarconi • Harry Bates • 

Aoϋt 1940
Couverture d'Howard Brown

There Was No Paradise • Manly Wade Wellman • 
A Problem in Diatonics • Nelson S. Bond • ss
No Man's World • Henry Kuttner • ss
Pebbles of Dread • Gerald Evans • ss
Ice Over America • Ray Cummings • nv
The Impossible Highway • Oscar J. Friend • ss
The Secret of Anton York [*Anton York] • Eando Binder • nv

Septembre 1940
Couverture de Earle Bergey

The Tyrant of Mars • Frederic Arnold Kummer, Jr
The Comedy of Eras [by Henry Kuttner; *Pete Manx] • Kelvin Kent • ss
Prospectors of Space • Malcolm Jameson • ss
The Vanishing Men • Ray Cummings • ss
Formula for Life • Max C. Sheridan • ss
The Night the World Ended • Edmond Hamilton • 
West Point of Tomorrow • Arthur J. Burks • nv
The Stolen Spectrum • Oscar J. Friend • ss

Octobre 1940
Couverture de Earle Bergey

Waters of Wrath • Arthur K. Barnes • nv
One Way Star Ride • Robert Moore Williams • ss
Colossus from Space [by Oscar J. Friend] • Frank Johnson • ss
Man About Time [by Henry Kuttner; *Pete Manx] • Kelvin Kent • ss
Via Mercury [*Via] • Gordon A. Giles • ss
Murder Asteroid • Edmond Hamilton • vi
Upward Bound • Gerald Evans • ss
The Worlds of Tomorrow • Manly Wade Wellman • nv

Novembre 1940
Couverture de Earle Bergey

The Tomb of Time • Robert Arthur • nv
Reverse Atom • Henry Kuttner • ss
The White Brood • Hal K. Wells • ss
Via Catacombs [*Via] • Gordon A. Giles • ss
"Shall Stay These Couriers..." • Nelson S. Bond 
The Day to Come • Don Tracy • nv
A Snare for Tomorrow • Arthur J. Burks • ss

Dιcembre 1940
Couverture de Earle Bergey

The Life Machines • Manly Wade Wellman • ss
Exiled from Earth • Sam Merwin, Jr. • ss
Via Intelligence [*Via] • Gordon A. Giles • ss
The Golden Barrier • G. T. Fleming-Roberts • nv
The Blonde, the Time Machine and Johnny Bell • Kenneth L. Harrison • ss
World Upside Down [*Tubby] • Ray Cummings • 
Gift from the Stars • Edmond Hamilton • nv