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) several DC characters continuously published throughout the 1950s, there isn't a clear dividing line between the Earth-One and Earth-Two versions of Superman. Several stories published before the mid-1950s took place on Earth-One, such as "Superman" (volume 1) #78 from September–October 1952, the first appearance of the adult Lana Lang in Superman comics. Also, any Superman stories published before the mid-1950s that featured or mentioned Superboy also took place exclusively on Earth-One, as the Earth-Two Superman, per the earliest Superman comics, never had a Superboy career. The Earth-One Superman's first appearance in comics was in "Superman" (volume 1) #46 (May 1947),