Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. The records also indicate that Dick Dillin and Joe Giella prepared an unused cover for #66, which appeared in The Amazing World of DC Comics (DC, 1974 series) #14 (added by Gregory Fischer, May 2009).
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007).