Sixty Days to Live
Dennis Wheatley
"I, Robot"
Otto Binder
Adam Link (1)
Synthetic Men of Mars
Edgar Rice Burroughs
Barsoom (9)
The Trojan Beam
John Wyndham
BoW (4)
The Incorrigible
L. Sprague de Camp
Johnny Black (2)
The Black Flame
Stanley G. Weinbaum
Margaret of Urbs (2)
A Message to the Future
uncredited
Amazing Stories 1939-01 v13n01
Amazing Stories
Astounding Science-Fiction 1939-01 v22n05
Astounding Stories
Startling Stories 1939-01 v01n01
Startling Stories
Marvel Science Stories 1939-02 v01n03
Marvel Science Stories
Valley Of Lost Souls
Living Fossil
Cosmic Engineers
Clifford D. Simak
Wanted: 7 Fearless Engineers!
Nelson Tremaine
After World's End
Jack Williamson
Dynamic Science Stories 1939-02 v01n01
Dynamic Science Stories
Amazing Stories 1939-02 v13n02
Astounding Science-Fiction 1939-02 v22n06
Thrilling Wonder Stories 1939-02
Thrilling Wonder Stories