The Chessmen of Mars. Edgar Rice Burroughs, 1922. Ace edition.
Back text reads: "THE CHESSMEN OF MARS
Human chessmen who must fight to the death at their masters' command such is but one of the many thrills that await the reader in this terrific tale of adventure and discovery in the lost cities of Barsoom - the Mars of Edgar Rice Burroughs!
Gahan of Gathol pits his sword against heads without bodies and bodies without heads, against a fiendish monarch, and against the terrors of a forbidden city - with his reward the hand of a captive maiden, Tara, the Warlord's daughter.
THE CHESSMEN OF MARS is a science-fiction classic by the author of TARZAN OF THE APES."
Cover art and title page illustration by Roy Krenkel, Jr.











