Alternative versions of Superman establish a new continuity for DC, affecting not only Superman, but all of the DC Comics characters. The versions of Superman from this time period are traditionally divided into three main periods. The first version of Superman began being published by DC Comics in 1938 appearing in "Action Comics" #1. To explain discrepancies in the aging of Superman across several decades, his earliest stories were retroactively portrayed as having taken place on an alternative world called Earth-Two. These stories take place from 1938 until the late 1950s, although the exact dividing line is unclear and some stories happened identically to
Superman and Lois Lane Siegel and Joe Shuster. Across decades of comics, Lois would suspect Clark is Superman and tries to prove it, but Superman always thwarts her. This theme became particularly pronounced in the 1950s and 1960s comics. The first official DC Comics story where Superman marries Lois Lane (not dreams, hoaxes or imaginary tales, but in DC canon) was in "Action Comics" #484 (June 1978). In this 40th anniversary of Superman issue, a wizard wanted to rid the world of Superman but had no idea that Superman had a secret identity. Clark, with no memory of being Superman and therefore no need