At the Earth's Core

A Princess of Mars

Thuvia, Maid of Mars

Chronicles of Mars Volume I: Volume 1

Out of Time's Abyss

Thuvia, Maid of Mars

The Outlaw of Torn

The Chessmen of Mars

Land of Terror: Journey through a Lost World of Prehistoric Terror and Adventure

The Land That Time Forgot: Journey to a Lost World of Prehistoric Adventure and Fantasy

The Moon Maid by Edgar Rice Burroughs: A sci-fi adventure of lunar civilizations and interplanetary conflict.

The Lost Continent

The Return of Tarzan

Llana of Gathol

Warlords of Mars

Chronicles of Mars Volume II: Volume 2

A Fighting Man of Mars

Carson of Venus

A Princess of Mars

Out of Time's Abyss