Superman the offer. Siegel and Shuster submitted their work in late February and were paid $130 (AFI $) for those 13 pages. In early March they signed a contract (at Liebowitz's request) in which they released the copyright for Superman to Detective Comics, Inc. This was normal practice in the business, and Siegel and Shuster had given away the copyrights to their previous works as well. Superman was finally published on April 18, 1938, in the first issue of "Action Comics". The magazine sold very well, and feedback from readers showed it was because of Superman. Siegel and Shuster read pulp
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