Edgar Rice Burroughs

Tarzan the Invincible is a novel written by Edgar Rice Burroughs, the fourteenth in his series of books about the title character Tarzan. The novel was originally serialized in the magazine Blue Book from October, 1930 through April, 1931 as "Tarzan, Guard of the Jungle."

Tarzan Triumphant is a novel written by Edgar Rice Burroughs, the fifteenth in his series of books about the title character Tarzan. The novel was originally serialized in the magazine Blue Book from October, 1931 through March 1932. It should not be confused with the 1943 film "Tarzan Triumphs." The plots are not …