This is the twenty-third book in the Tarzan Series. Written from January to February 1940, the story was never published in Burroughs' lifetime. Tarzan tracks down a man who has been mistaken for him. The man is under the delusion that he is Tarzan, and he is living in a lost city inhabited by people descended from early Portuguese explorers. The plot devices of a lost city and a Tarzan "double" or impostor had been used by Burroughs in some previous Tarzan novels.

Tarzan and the Madman by Edgar Rice Burroughs is an exciting adventure novel that continues the thrilling exploits of Tarzan, the legendary jungle hero. In this installment, Tarzan finds himself embroiled in a dangerous conspiracy involving madness, lost civilizations, and a quest for power. Key Points: Burroughs delivers another action-packed tale featuring Tarzan, showcasing the iconic character's physical prowess, resourcefulness, and jungle survival skills, as he navigates treacherous landscapes, encounters formidable adversaries, and unravels the mysteries of the Madman's plot. The novel explores themes of power, greed, and the clash between civilization and the untamed wilderness, providing readers with an enthralling blend of adventure, suspense, and exploration of the human condition. Tarzan and the Madman is a must-read for fans of the Tarzan series and adventure enthusiasts, offering a thrilling escapade that transports readers to the untamed world of the jungle, filled with danger, excitement, and the indomitable spirit of Tarzan.

Tarzan and the Ant Men is a novel by American writer Edgar Rice Burroughs, the tenth in his series of twenty-four books about the jungle hero Tarzan. It was first published as a seven-part serial in the magazine Argosy All-Story Weekly for February 2, 9, 16 and 23 and March 1, 8 and 15, 1924. It was first published in book form in hardcover by A. C. McClurg in September 1924. The story was also adapted for Gold Key Comics in Tarzan #174-175 (1968).In the book Master of Adventure: The Worlds of Edgar Rice Burroughs, Richard A. Lupoff places Tarzan and the Ant Men in his list of essential Burroughs novels and states that it represents Burroughs at the peak of his creative powers.

Be the pinnacle of the Burroughs Tarzan books with the author's vivid imagination and creativity going on full thrusters, but I myself find some of the book's societal implications a little troubling. Then again it's also basically a Tarzan meets Gulliver's Travels story, and that's kind of cool.First published as a seven-part serial in the magazine Argosy All-Story Weekly in 1924 this is entry can be considered the last book of the run that began with Tarzan the Untamed, continued through Tarzan the Terrible and Tarzan and the Golden Lion, and then concluded here with Tarzan and the Ant Men. After this most of the regular supporting characters begin to fade into the background, and Tarzan spends much of his time out in the jungle meeting new and interesting characters.

Tarzan and the Lion Man is a novel by American writer Edgar Rice Burroughs, the seventeenth in his series of twenty-four books about the title character Tarzan. The novel was originally serialized in the magazine Liberty from November 1933 through January 1934.