Publication history of Superman have gone down to his local newsstand and asked a kid, "Why are you reading this one?" pointing to "Action Comics". "Because it's the one that has Superman in it, mister." The revised Superman first appeared in "Action Comics" #1, June 1938. Siegel and Shuster sold the rights to the company for $130 and a contract to supply the publisher with material. The "Saturday Evening Post" reported in 1960 that the pair was being paid $75,000 each per year, still a fraction of DC's Superman profits. In 1964, when Siegel and Shuster sued for more money, DC fired them, prompting
Superman/Batman Batman discover each other's secret identities and agree to work together, even though they disagree with each other's methods of operating. The issue is a reimagining of "The Mightiest Team In the World", the tale from "Superman" #76 (May–June 1952) in which the two heroes discover each other's secret identities and team up for the first time. In "The Unexamined Life... " ("Annual" #2 (2008)), Superman loses his powers and takes on the identity of Supernova. The issue is a reimagining of "The Has-Been Superman" from "World's Finest Comics" #178 (September 1968) and "Superman's Perfect Crime" from "World's Finest Comics"