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