A Vision of Venus
Otis Adelbert Kline
The Thing That Walked in the Rain
The Swordsman of Mars
Swordsman of Mars (1)
Stolen Centuries
Spawn of the Comet
Revenge of the Robot
The Prince of Peril
Grandon (2)
Prince of Peril
The Port of Peril
Grandon (3)
The Outlaws of Mars
Swordsman of Mars (2)
The Metal Monster
Maza of the Moon
The Man from the Moon
The Malignant Entity
Dr. Dorp (1)
Jan of the Jungle (The Call of the Savage)
Jan of the Jungle (1)
Jan of the Jungle
Call of the Savage