Warlord of Mars
Thuvia, Maid of Mars
The Son of Tarzan
The Return of Tarzan
The People That Time Forgot
The Outlaw of Torn
The Oakdale Affair
The Mucker
The Monster Men
The Mad King
The Lost Continent
The Land That Time Forgot
The Gods of Mars
The Efficiency Expert
The Chessmen of Mars
Tarzan the Untamed
Tarzan the Terrible
Tarzan of the Apes
Tarzan and the Jewels of Opar
Pellucidar
Out of Time's Abyss
Jungle Tales of Tarzan
At The Earth's Core
A Princess of Mars