Tales of Suspense #58
The Chameleon tricks Iron Man into attacking Captain America, and the two fight until the misunderstanding is discovered
An alien warlord attacks the Watcher, and is instantly destroyed by accelerated aging.
Printed: Oct 1964
Writers: Stan Lee
Art: Don Heck, Dick Ayers, Jack Kirby, George Tuska
Cover: Jack Kirby and Chic Stone