VOL. 18, N° 1 - janvier 1944
Couverture de Robert Fuqua

The Mad Robot • William P. McGivern • na
Intruders from the Stars • Ross Rocklynne • na
Phantom City of Luna [by William P. McGivern] • P. F. Costello • nv
Master of the Living Dead • Ed Earl Repp • nv
Island of Eternal Storm • Berkeley Livingston • nv
The Needle Points to Death [by William P. McGivern] • Gerald Vance • ss

VOL. 18, N° 2 - mars 1944
Couverture de J. Allen StJohn plus dessin original

The Superman • Capt. Meyer Friedenson • ss
It's a Small World • Robert Bloch • na
Magnetic Miss Meteor • Don Wilcox • nv
Crossed Wires • Leroy Yerxa • nv
Battle Before Dawn • Robert Moore Williams • ss
Thompson's Time-Traveling Theory • Mort Weisinger • ss
Journey in Time to Cleopatra • Helmar Lewis • nv
Spawn of Jupiter • Ed Earl Repp • nv
Cokie Goes Treasure Hunting • Berkeley Livingston • ss

VOL. 18, N° 3 - mai 1944
Couverture de Malcolm Smith

Murder in Space • David V. Reed • n.
I, Rocket • Ray Bradbury • ss
The Free-Lance of Space • Edmond Hamilton • ss
The Headless Horror • Helmar Lewis • nv
Midas Morgan's Golden Touch • Emil Petaja • ss
The Constant Drip • Berkeley Livingston • nv

VOL. 18, N° 4 - septembre 1944
Couverture de Julian S. Krupa

Star Base X • Robert Moore Williams • nv
The Thinking Cap • William P. McGivern • nv
Private Prune Speaking • David Wright O'Brien • n
Professor Thorndyke's Mistake [by William P. McGivern] • P. F. Costello • ss
Dolls of Death • E. K. Jarvis • nv
Weapon for a WAC [by Raymond A. Palmer] • Morris J. Steele • ss
Double-Cross on Mars [by William P. McGivern] • Gerald Vance • nv
Warburton's Invention • Russell Storm • nv
Overlord of Venus • William Lawrence Hamling • ss
Matches and Kings • John York Cabot • ss
I'll See You Again • Duncan Farnsworth • ss

VOL. 18, N° 5 - dιcembre 1944
Couverture de James B. Settles

Undersea Guardians • Ray Bradbury • ss
The Man Who Hated War • Emil Petaja • ss
War Criminals of Renault Island • C. A. Baldwin •
The Map of Fate • Donald Bern • ss
A Most Ingenious Paradox • George Tashman •
The Life Machine • Lester Barclay • nv
Invasion Dust • Don Wilcox • ss
The Odyssey of Battling Bert • Stanton A. Coblentz • ss
The Whips of Doom • Helmar Lewis • ss
Truk Island • Berkeley Livingston • na

VOL. 19, N° 1 - mars 1945
Couverture de Robert Gibson Jones

"I Remember Lemuria!" [*Mutan Mion] • Richard S. Shaver • na
The Martian's Masterpiece • Morris J. Steele • ss
Moon of Double Trouble [by Raymond A. Palmer] • A. R. Steber • nv
Is This the Night? [by Leroy Yerxa] • Alexander Blade • ss
Comet from Yesterday [by Leroy Yerxa] • Lee Francis • nv
The Lying Lie Detector • Leroy Yerxa • ss
Valley of Delirium • Richard Casey • nv
Twirl My Turbine, Man Alive! • Omar Geer • ss
Dr. MacDonough's Encephalosemanticommunicator • Leo A. Schmidt • ss

VOL. 19, N° 2 - juin 1945
Couverture de Robert Gibson Jones

Thought Records of Lemuria • Richard S. Shaver
Weep No More, My Robot • Chester S. Geier • ss
Invaders from the Monster World • Edmond Hamilton • nv
The Radiant Rock • Frances M. Deegan • nv
The Scarlet Swordsmen • Don Wilcox • na
Peril from the Outlands • William Lawrence Hamling • ss
I'll Be Fleeced • Berkeley Livingston • nv

VOL. 19, N° 4 - dιcembre 1945
Couverture de Robert Gibson Jones

Quest of Brail • Richard S. Shaver • na
Planet of the Duplicates • William Lawrence Hamling • ss
Mirage World • Chester S. Geier • nv
The Miracle of Bulldozer Mike • Robert Moore Williams • ss
Me and My Shadow • Berkeley Livingston • nv
Let Freedom Ring! • Rog Phillips • nv
Gallery of Glacial Doom • Frances M. Deegan • ss