This comprehensive collection contains: A Princess of Mars At the Earth's Core Jungle Tales of Tarzan Out of Time's Abyss Pellucidar Tarzan and the Ant Men Tarzan and the Golden Lion Tarzan and the Jewels of Opar Tarzan of the Apes Tarzan the Terrible Tarzan the Untamed The Beasts of Tarzan The Chessmen of Mars The Efficiency Expert The Girl from Hollywood The Gods of Mars The Land That Time Forgot The Lost Continent The Mad King The Monster Men The Moon Maid The Mucker The Oakdale Affair The Outlaw of Torn The People That Time Forgot The Return of Tarzan The Son of Tarzan Thuvia, Maid of Mars Warlord of Mars Edgar Rice Burroughs, American speculative fiction writer, best known for his prolific output in the adventure, science fiction and fantasy genres. His most well-known creations include Tarzan of the Apes, John Carter of Mars (Barsoom series) and Carson Napier of Venus (Amtor series).