On two separate occasions – April 1996 and June 1997 – Marvel and DC co-published issues under the Amalgam Comics imprint. The issues were presented as if the imprint had existed for decades, with stories and editorial comments referring to a fictional history stretching back to the Golden Age of Comics, including retcons and reboots. For example, they referred to Secret Crisis of the Infinity Hour (an amalgamation of Marvel’s Secret Wars, DC’s Crisis on Infinite Earths, Marvel’s The Infinity Gauntlet, and DC’s Zero Hour), which featured the well-known cover of Crisis on Infinite Earths #7, but with Super-Soldier holding his sidekick’s body, instead of Superman holding Supergirl. Several issues included fake letter columns to provide the illusion of background to the stories, with the “fans'” hometowns formed by amalgamating the names of existing cities.
EHT Comics 