Per Tom Orzechowski, the story was based on "Achilles Vs. Superman" from Superman (DC, 1939 series) #63.
Letters from Cathy Prewett, Jon Natlo, Thomas Rybak, Paul Gambaccini, Jimmy Pells, Diana Rhoades, Rex Peterson. Steve Marshall, and Ed Bryant.
Story recycled from Superman (DC, 1939 series) #114.