Startling Stories 1939-05 v01n03
Startling Stories
Fantastic Adventures 1939-05 v01n01
Fantastic Adventures
Astounding Science-Fiction 1939-05 v23n03
Astounding Stories
Thrilling Adventures 1939-06
Thrilling Adventures
Argosy Weekly 1939-06-17 Children of Tomorrow
Argosy
The Man Without a World
John Coleman & Hulbert Burroughs
Stolen Centuries
Otis Adelbert Kline
The Ultimate Catalyst
John Taine
Passage to Saturn
Jack Williamson
Hermit of Mars
Clifford D. Simak
The Civilisation Game (3)
Children of Tomorrow
Arthur Leo Zagat
Tomorrow (2)
Science Fiction 1939-06 v1n2
Science Fiction
Thrilling Wonder Stories 1939-06 v13n03
Thrilling Wonder Stories
Amazing Stories 1939-06 v13n06
Amazing Stories
Astounding Science-Fiction 1939-06 v23n04
Futuria Fantasia 1939-06 v01n01
Futuria Fantasia
Startling Stories 1939-07 v02n01
Trends
Isaac Asimov
The Scientists Revolt
Edgar Rice Burroughs & Ray Palmer
Nothing in the Rules
L. Sprague de Camp