Superman first appeared in Action Comics #1 in June 1938.
Superman first appeared in Action Comics #1.
Superman first appeared in Action Comics #1.
Superman first appeared in comics in 1938.
Superman first appeared in Action Comics #1 in June 1938.
The first Superman story appeared in Action Comics #1 in 1938.
The first Superman comic book was published in 1938.
The first Superman comic book came out in 1938.
The first Superman comic book came out in 1938. This marked the beginning of Superman's journey and his enduring popularity in the comic book universe.
The first Superman comic book was released in 1938.
The first Superman comic book was released in 1938.