ACTION COMICS (1938) #590

Cover by John Byrne.  » Better Living Dying through Chemistry  » written and penciled by John Byrne, inked by Dick Giordano, colored by Tom Ziuko and lettered by John Costanza. Clark Kent falls into a vat of chemicals, forming Chemo with Superman’s added powers! What can the Metal Men do against the evilly empowered Man of Steel? Notes: The story makes reference to the events of Crisis on Infinite Earths .