Description: Edgar Rice Burroughs Mars Series: A Princess of Mars, Sword of Mars & Synthetic Men of Mars, Llana of Gathol and John Carter of Mars, The Mastermind of Mars and A Fighting Man of Mars, Thuvia, Maid of Mars & The Chessmen of Mars, The Gods of Mars & The Warlord of Mars. 6 book set. Bookclub edition. Published by Doubleday book club editions 1970 Good Condition. In our Frisco store.