Copyright 1963 by National Periodical Publications, Inc.
Reworked version of "The Interplanetary Olympics" in Action Comics (DC, 1938 series) #220 (September 1956). Info from Bob Bailey, 2005-03-19 (Per Sandell ed.)
Letters from readers - Paul Diamond, James Ward, Beatrice Langley, Denise Castin, Alice O'Shawn, Bruce Camden and John Romney
membership application form for the Supermen of America; also includes message in secret code (Code Jupiter No. 4)
decoded message reads: "The next issue of Action will reveal why Superman needs a secret identity."