The Chessmen of Mars — © Edgar Rice Burroughs, 1922 — © Éditions A. C .McClurg & Co., 1922 — © Illustration J. Allen St. John, 1922

The Chessmen of Mars — © Edgar Rice Burroughs, 1922 — © Éditions A. C .McClurg & Co., 1922 — © Illustration J. Allen St. John, 1922