U.S.A. Comics was an American comic-book series published by Marvel Comics' 1930–1940s predecessor, Timely Comics, during the period fans and historians call the Golden Age of comic books.
U.S.A. Comics #1 (Aug. 1941), featuring the Defender. Cover art by Joe Simon and Jack Kirby (pencilers) & Joe Simon (inker).
Timely Comics is the common name for the group of corporations that was the earliest comic book arm of American publisher Martin Goodman, and the entity that would evolve by the 1960s to become Marvel Comics.
Marvel Comics #1 (Oct. 1939), the first comic book from Marvel predecessor Timely Comics. Cover art by Frank R. Paul.
Captain America Comics #1 (March 1941), art by Jack Kirby (penciler)
All New All Different Avengers #1 (Nov. 2015). Cover art by Alex Ross