Fιvrier 1938
Couverture de Brown

Dream-Dust from Mars • Manly Wade Wellman • 
Via Asteroid [*Via] • Gordon A. Giles • ss
Zones of Space • Max C. Sheridan • nv
The Changer of History • Alexander Samalman • 
Life Eternal [*Anton York] • Eando Binder • nv
Alchemy of Outer Space • D. L. James • ss
We, the Invisible • Frank Belknap Long, Jr. • ss

Avril 1938
Couverture ?

Hollywood on the Moon [*Tony Quade] • Henry Kuttner • nv
The Infinite Enemy • Jack Williamson • nv
Easy Money • Edmond Hamilton • ss
Roamer of the Stars • Clyde Wilson • ss
Glimpse • Manly Wade Wellman • ss
Lords of 9016 • John Russell Fearn • nv
The Dark Age • Clark Ashton Smith • ss
Rays of Blindness [by Otto Binder] • Will Garth • ss

Juin 1938
Couverture de Brown

Murder in the Void  • Edmond Hamilton 
The Reinmuth Rider • John Victor Peterson • ss
The Man Who Looked Like Steinmetz • 
Robert Moore Williams • ss
The Dual World] • Arthur K. Barnes • 
Wings Across the Cosmos • Polton Cross • ss
The Year of Unreason • J. Harvey Haggard • ss
The Great Illusion • Will Garth • ss
Time on My Hands • Mort Weisinger • vi
Terror in Utopia • Paul Ernst • ss

Aoϋt 1938
Couverture ?

Doom World [*Tony Quade] • Henry Kuttner • 
The Satanic Cysts • Paul Chadwick • ss
The Exterminators • Frederic Arnold Kummer, Jr. 
Catalyst Planet • Raymond A. Palmer • ss
The Thing from Mars • Ray Cummings • 
The Green Ray • Arthur Leo Zagat • ss
Via Death [*Via] • Gordon A. Giles • ss
Song of the Shadow Death • Robert Moore Williams • ss

Octobre 1938
Couverture de Brown

Satellite Five • Arthur K. Barnes • nv
Cosmic Teletype • Carl Jacobi • ss
The Challenge of Atlantis • Arthur J. Burks • ss
Of Jovian Build • Oscar J. Friend • ss
The Brain Pirates [*Penton & Blake] • John W. Campbell, Jr. • ss
Mind Out of Time • Frank Belknap Long, Jr. • ss
The Man Who Saw too Much • 
Ray Cummings • ss
The Robot and the Lady • Manly Wade Wellman • vi

Dιcembre 1938
Couverture ?

Hands Across the Void [by Henry Kuttner] • Will Garth • ss
26 • The Star Parade [*Tony Quade] • Henry Kuttner • nv
The Great Adventure • Ray Cummings • ss
The Loot of Time • Clifford D. Simak • nv
Tidal Moon • Stanley G. & Helen Weinbaum • ss
The Cosmic Hiss • Edmond Hamilton • ss
The Metal Ocean • Eando Binder • ss

Avril 1939
Couverture d'Howard Brown

The Jules Verne Express • Eando Binder • ss
Experiment • Roscoe Clark, F.R.C.S. • ss
Beyond Annihilation • Henry Kuttner • ss
Men Must Die • Ward Hawkins • nv
The Broken Axiom • Alfred Bester • ss
Madness from Mars • Clifford D. Simak • ss
White Barrier • Frank Belknap Long, Jr. • nv
Zeoh-X • Ray Cummings • ss

Juin 1939
Couverture d'Howard Brown

The Ultimate Catalyst • John Taine • nv
Stolen Centuries • Otis Adelbert Kline • ss
The Man Without a World [*Rader] • John Coleman & Hulbert Burroughs • ss
Moon of Intoxication • Eando Binder • ss
Passage to Saturn • Jack Williamson • ss
Robot Nemesis • Edward Elmer Smith, Ph.D. • 
No More Friction • David H. Keller • ss
Dawn of Flame • Stanley G. Weinbaum • nv

Aoϋt 1939
Couverture d'Howard Brown

The Man from Xenern • Stanton A. Coblentz • 
The Time Twin • Lyle D. Gunn • ss
The Warning from the Past • Robert Moore Williams • nv
Cosmic Cube • Graph Waldeyer • ss
The Dweller in Outer Darkness • 
Frank Belknap Long, Jr. • ss
Roman Holiday • Kelvin Kent • nv
Secret of the Sun • Ray Cummings • ss
Race Around the Moon • Otis Adelbert Kline • n

Octobre 1939
Couverture d'Howard Brown

The Energy Eaters  • Arthur K. Barnes & Henry Kuttner • nv
Via Venus [*Via] • Gordon A. Giles • ss
The Scourge Below • Sam Merwin, Jr. • nv
Experiment with Destiny • Oscar J. Friend • ss
Hades • Charles F. Ksanda • ss
Hero • H. L. Gold • ss
Planet of Eternal Night • John W. Campbell, Jr. 

Dιcembre 1939
Couverture d'Howard Brown

Signboard of Space • Frederic Arnold Kummer, Jr. 
The Einstein Slugger • Manly Wade Wellman • 
Suicide Squad • Henry Kuttner • nv
World's Pharaoh [by Henry Kuttner; *Pete Manx] • Kelvin Kent • ss
Coup d'ιtat • Oscar J. Friend • ss
Shadow World • Ray Cummings • ss
No Help Wanted • Alfred Bester • vi
The Three Eternals [*Anton York] • Eando Binder • nv