Superman of the Übermensch; they never acknowledged as much. Since 1938, Superman stories have been regularly published in periodical comic books published by DC Comics. The first and oldest of these is "Action Comics", which began in April 1938. "Action Comics" was initially an anthology magazine, but it eventually became dedicated to Superman stories. The second oldest periodical is "Superman", which began in June 1939. "Action Comics" and "Superman" have been published without interruption (ignoring changes to the title and numbering scheme). A number of other shorter-lived Superman periodicals have been published over the years. Superman is part of the DC
Superman (Earth-One) the first time Superboy was referenced in a Superman story. The Earth-One Superman's first appearance (in a flash-forward) in a Superboy story was in "Superboy" (volume 1) #1 (March–April 1949). This version of Superman remained in publication through 1986. After the 1985-86 miniseries "Crisis on Infinite Earths", the Earth-One Superman was written out of continuity with the 1986 John Byrne miniseries "The Man of Steel". However, the Earth-One Superman was given a send-off in the final, noncanonical-to-Earth-One "imaginary" story "Whatever Happened to the Man of Tomorrow?" in "Superman" (volume 1) #423 (September 1986) and "Action Comics" #583 (September 1986). "For