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