Robert Bloch
This Crowded Earth
Charles Darwin
The Autobiography of Charles Darwin
William Hope Hodgson
The House on the Borderland
Mary Wollstonecraft Shelley
The Last Man
Anonymous
A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery
Edgar Rice Burroughs
The People that Time Forgot
Edgar Rice Burroughs
Pellucidar
Unknown
Cinq semaines en ballon
H. G. Wells
The Food of the Gods and How it Came to Earth
E.E. “Doc” Smith
Triplanetary
Alfred Russel Wallace
Is Mars Habitable?
Edward Elmer Smith
Masters of Space
Peter Kropotkin
Mutual Aid: A Factor of Evolution
Andre Norton
Key Out of Time
Myrtle Reed
The Spinster Book
Roald Amundsen
The South Pole; an account of the Norwegian Antarctic expedition in the Fram, 1910-12
Marcus Vitruvius Pollio
Ten Books on Architecture
Edgar Rice Burroughs
The Lost Continent
H. Beam Piper
Omnilingual
Murray Leinster
Operation Terror
Henry L. Mencken
In Defense of Women
Justus Liebig
Familiar Letters on Chemistry
Murray Leinster
Space Tug
Tom Godwin
Space Prison
