Editing Earth-Two (section)

===Expanding the concept: revisiting 1940s superheroes===
[[Superman (Earth-Two)|Superman]] was introduced in the 1930s and was the archetype for the modern superhero, and so is depicted in stories set on Earth-Two as the first major reliable costumed superhero on that world, discounting earlier part-time heroes and "mystery men" such as [[Doctor Occult]] (who first appeared in 1935). Most of the following costumed mystery men history is based on the Earth-Two Superman's initial appearance, where these previously independent operating heroes begin to reliably interact. In order to distinguish him from the later primary version of the character, this Superman was called "Kal-L", using the spelling of Superman's Kryptonian name in his early appearances. He was specifically introduced as an Earth-Two character in ''Justice League of America'' #73 (1969).<ref>{{cite comic| writer=[[Dennis O'Neil|O'Neil, Denny]]| penciller=[[Dick Dillin|Dillin, Dick]]| inker=[[Sid Greene|Greene, Sid]]| story=Star Light, Star Bright—Death Star I See Tonight| title=[[Justice League]] of America| issue=#73| date=August 1969}}</ref> Most superheroes from the Golden Age later followed this trend of operating publicly, while wearing distinctive costuming and interacting in a largely shared universe. The primary characters of Superman and [[Batman (Earth-Two)|Batman]] still largely worked independent of team environments.

In the 1970s, as the now annual team up between the [[Justice League of America]] and the [[Justice Society of America]] had proven popular, DC published the then present day adventures of the Justice Society in the revived ''[[All-Star Comics]]'' with issue #58, resuming the numbering from the series' original run. The story continued in ''[[Adventure Comics]]'' #461–466, which featured the death of the Earth-Two Batman in issue #462. ''Mr and Mrs Superman'', a feature in ''[[Superman Family]]'' (1974–1982), featured stories of the adventures of married Superman and [[Lois Lane]] of Earth-Two. These stories were set at a time in which the Superman of Earth-Two was at a similar age to the then-present-day Superman of Earth-One. In the 1980s DC published ''[[All-Star Squadron]],'' which covered the war time history of various superheroes during World War II.

''[[Infinity, Inc.]]'', a group made up of the children and heirs of the Justice Society, was introduced in ''[[All-Star Squadron]]'' #25 (September 1983).<ref>{{cite book|last=Manning|first=Matthew K.|editor-last=Dolan|editor-first=Hannah|chapter=1980s|title=DC Comics Year By Year A Visual Chronicle|publisher=[[Dorling Kindersley]]|year=2010|location=London, United Kingdom|isbn=978-0-7566-6742-9|page=203|quote=The children of the original Justice Society of America made their smash debut in this issue by writer Roy Thomas and penciler Jerry Ordway...''All-Star Squadron'' #25 marked the first appearances of future cult-favorite heroes Jade, Obsidian, [[Fury (DC Comics)|Fury]],<!--Hippolyta "Lyta" Trevor made her first appearance in ''Wonder Woman'' #300 (February 1983), ''All-Star Squadron'' #25 was her first appearance using the name "Fury"--> [[Brainwave (character)|Brainwave Jr.]], [[Hector Hall|Scarab]], [[Northwind (comics)|Northwind]], and [[Albert Rothstein|Nuklon]].}}</ref> There was an eponymous comics series starring the group,<ref>Manning "1980s" in Dolan, p. 207: "Written by DC's Golden Age guru Roy Thomas and drawn by Jerry Ordway, ''Infinity, Inc.'' was released in DC's new deluxe format on bright Baxter paper."</ref> which ran from March 1984 through June 1988.