Tarzan

Tarzan of the Apes

Tarzan and the Jewels of Opar

The Return of Tarzan

Beasts of Tarzan

Jungle Tales of Tarzan

Tarzan the Terrible

Tarzan the Untamed

Son of Tarzan

Mars

The Gods of Mars

A Princess of Mars

Warlord of Mars

Thuvia, Maid of Mars

The Chessmen of Mars

The Land That Time Forgot

At The Earth's Core

Pellucidar

The Lost Continent

The Mad King

The Monster Men

The Mucker

The Outlaw of Torn

Out of Time's Abyss

The People That Time Forgot