Greater Than Gods
C. L. Moore
Black Destroyer
A. E. Van Vogt
Space Beagle (1)
Amazing Stories 1939-07 v13n07
Amazing Stories
Fantastic Adventures 1939-07 v01n02
Fantastic Adventures
Astounding Science Fiction 1939-07 v23n05
Astounding Stories
Thrilling Adventures 1939-08 v30n03
Thrilling Adventures
Astounding Science-Fiction (UK)1939-08
Astounding Stories (UK)
Thrilling Wonder Stories 1939-08 v14n01
Thrilling Wonder Stories
The Blue Giraffe
L. Sprague de Camp
Reverie
Arthur C. Clarke
Heavy Planet
E. V. Lucas & Milton A. Rothman
Life-Line [original version]
Robert A. Heinlein
Future History (1)
Life-Line
If Insects Ruled Humanity
Jack Binder
Amazing Stories 1939-08 v13n08
Astounding Science Fiction 1939-08 v23n06
Marvel Science Stories 1939-08 v01n05
Marvel Science Stories
Astounding Science-Fiction (UK)1939-09
Argosy Weekly 1939-09-30 Lords of Creation (Part 2 of 6) / Remember ...
Argosy
Argosy Weekly 1939-09-09 Bright Flag of Tomorrow