Empire (1928) (Ebook ) Tarzan at the Earth's Core (1929) (Ebook) Tarzan the Invincible (1930, 1931) (Ebook) Tarzan Triumphant (1931) (Ebook ) Tarzan and the City of Gold (1932) (Ebook ) Tarzan and the Lion Man (1933, 1934) (Ebook ) Tarzan and the Leopard Men (1935) (Ebook) Tarzan's Quest (1935, 1936) (Ebook ) Tarzan and the Forbidden City (1938) (Ebook ) Tarzan the Magnificent (1939) (Ebook) "Tarzan and the Magic Men" (1936) "Tarzan and the Elephant Men" (1937–1938) Tarzan and the Foreign Legion (1947) (Ebook ) Tarzan and the Madman (1964) Tarzan and the Castaways (1965) "Tarzan and the Castaways" (1941) (Ebook ) "Tarzan and the Champion" (1940) "Tarzan and the Jungle Murders" (1940) Tarzan and the Tarzan Twins (1963, for younger readers) "The Tarzan Twins" (1927) (Ebook ) "Tarzan and the Tarzan Twins and Jad-Bal-Ja the Golden Lion" (1936) (Ebook ) Tarzan: the Lost Adventure (unfinished) (revised and completed by Joe R. Lansdale) (1995) By other authors Maude Robinson Toombs wrote a novelization of the film serial The Adventures of Tarzan published as a 15-part serial for newspapers in 1921, it was collected and published as a released as a trade-paperback () by ERBville Press in January 2006. Arthur B. Reeve wrote a novelization of the film serial Tarzan the Mighty published as a 15-part serial for newspapers in 1928, it was collected and published as a released as a trade-paperback () by ERBville Press in 2005. Barton Werper – these novels by the pseudonymous "Barton Werper" were never authorized by the Burroughs estate, were taken off the market and remaining copies destroyed. Tarzan and the Silver Globe (1964), the novel was rewritten as "Zamba and the Silver Globe" () and published by ERBville Press in October 2014. Tarzan and the Cave City (1964) Tarzan and the Snake People (1964) Tarzan and the Abominable Snowmen (1965) Tarzan and the Winged Invaders (1965) Fritz Leiber – the first novel authorized by the Burroughs estate, and numbered as the 25th book in the Tarzan series. Tarzan and the Valley of Gold (1966) Philip José Farmer (also wrote a novel based on his own fascination with Tarzan, entitled Lord Tyger, and translated the novel Tarzan of the Apes into Esperanto). Tarzan Alive (1972) a fictional biography of Tarzan (here Lord Greystoke), which is one of the two foundational books (along with Doc Savage: His Apocalyptic Life) of the Wold Newton family. The