The Justice Society of America (JSA) is a superhero team appearing in American comic books published by DC Comics. The Justice Society of America was conceived by editor Sheldon Mayer and writer Gardner Fox. The JSA first appeared in All Star Comics #3 (Winter 1940–1941), making it the first team of superheroes in comic books. The team was initially popular, but in the late 1940s, the popularity of superhero comics waned, and the JSA's adventures ceased with issue #57 of the title (March 1951). JSA members remained absent from comics until ten years later, when the original Flash appeared alongside a new character by that name in The Flash #123 (September 1961). During the Silver Age of Comic Books, DC Comics reinvented several Justice Society members and banded many of them together in the Justice League of America. The Justice Society was established as existing on "Earth-Two" and the Justice League on "Earth-One". This allowed for annual cross-dimensional team-ups of the teams between 1963 and 1985. New series, such as All-Star Squadron, Infinity, Inc. and a new All-Star Comics featured the JSA, their children and their heirs.…Wikipedia