[1] Written starting in November 1940, and first published as a three-part serial in Argosy Weekly (1941, August 23 & 30 and September 6) as “The Quest of Tarzan”.

In the first chapter, Tarzan finds a downed Italian plane, with the pilot dead, not from the crash but from a bullet wound.

The development of a new device that will disrupt the ignition system of an internal combustion engine has spies from Russia, Italy, and England scrambling for possession.

[2] Tarzan, his monkey companion Nkima, Chief Muviro, and the Waziri warriors confront an American prize fighter, One-Punch Mullargan, who has come to Africa to hunt the wildlife, using a machine-gun.

One serious moment in this little piece of fluff is Tarzan's lecture about suffering animals.”[4] The three stories in the book were adapted graphic novel form by Joe Kubert and published by DC Comics:[5]