John Carter of Mars
Edgar Rice Burroughs
Barsoom (1)
Successful Operation
Robert A. Heinlein
Requiem
D. D. Harriman (1)
Captain Future and the Space Emperor
Edmond Hamilton
Captain Future (1)
The Three Planeteers
Startling Stories 1940-01 v03n01
Startling Stories
Futuria Fantasia 1940-01
Futuria Fantasia
Famous Fantastic Mysteries 1940-01 v01n04
Famous Fantastic Mysteries
Thrilling Wonder Stories 1940-01 v15n01
Thrilling Wonder Stories
Amazing Stories 1940-01 v14n01
Amazing Stories
Astounding Science-Fiction 1940-01 v24n05
Astounding Stories
Argosy Weekly 1940-01-06 Maker of Shadows 5
Argosy
Argosy Weekly 1940-01-20 Footsteps Invisible - Minions of Mars ...
Argosy Weekly 1940-01-27 Minions of Mars (Part 3 of 5)
Unknown 1940-01 v02n05
Unknown
Terror Tales 1940-02
Terror Tales
Planet Stories 1940-Spring
Planet Stories
The Other Worlds
Phil Stong
Planet Comics 002 1940-02
Planet Comics
The Early Asimov or, Eleven Years of Trying Volume 1
Isaac Asimov