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/Shazam: First Thunder of "Paperback Reader" gave the book an A-, saying "if you want a laid back adventure, try this book out. It is one of the best Captain Marvel stories I’ve had the honor of reading." The series was collected as a trade paperback: Superman/Shazam: First Thunder Superman/Shazam: First Thunder is a 2006 comic book mini-series published by DC Comics, written by Judd Winick, with art by Joshua Middleton. The story recounts the first meeting between two DC superheroes, Superman and Captain Marvel. Contrary to the usual popular stereotype, the encounter proves most pleasant as they quickly become staunch allies whose