Tarzan and the Jewels of Opar (Tarzan Series Book 6)

350 pp. Light blue-green cloth, black titles. Frontispiece and illustrations by J. Allen St. John. The sixth in the Tarzan series, originally serialized in All-Story Cavalier Weekly in 1916. 'Captured in an ancient city by hairy beast men, Tarzan is nearly sacrificed by their Queen.'