Avengers (1963) #6
The First Appearance of Masters of Evil and the First Full Appearance of the original Baron Zemo! Cap's wartime nemesis Baron Zemo wants him dead again, and he's gathered the Avengers' individual enemies to handle the job!
Published: 7/1/1964
- Jack Kirby, penciler
- Stan Lee, writer
- Sam Rosen, letterer
- Chic Stone, inker