Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [August 2007]
Credits for script and pencils confirmed from Julius Schwartz's editorial records, provided by DC Comics. The records also confirm Giacoia as inker. Esposito credit given by the indexer.
Part 1. Concluded in Action Comics (1938) #426. Credits for script and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007). Schwartz's records also credit the pencils to Giordano but Neal Adams' checklist (http://www.nealadams.com/comicchecklist.html) credits the pencils to Adams.