At the Earth's Core
Edgar Rice Burroughs
Pellucidar (1)
The People That Time Forgot
Caspak (2)
Thuvia, Maid of Mars
Barsoom (4)
The Warlord of Mars
Barsoom (3)
The Gods of Mars
Barsoom (2)
Tarzan of the Apes
Tarzan (1)
A Princess of Mars
Barsoom (1)
Looking Backward, 2000-1887
Edward Bellamy
Julian West (1)
The Lost City
Joseph Badger, Jr.
A Journey in Other Worlds: A Romance of the Future
John Jacob Astor
Triplanetary
Edward E. Smith
Lensman (1)
The Picture of Dorian Gray
Oscar Wilde
The Food of the Gods And How It Came to Earth
H. G. Wells
SF Masterworks (81)
The World Set Free
In the Days of the Comet
The First Men in the Moon
Cavor (1)
From the Earth to the Moon
Jules Verne
Baltimore Gun Club (1)
A Connecticut Yankee in King Arthur's Court
Mark Twain
The Last Man
Mary Shelley
The Enchanted Castle
E. Nesbit