Notes:
Julius Schwartz's editorial records, provided by DC Comics, show Ross Andru as being paid for the pencils and inks for the cover, however Mike Esposito worked with Ross and scholars agree he inked this cover. Schwartz kept editorial records for Robert Kanigher who edited this issue.
Notes:
A retelling of the origin, not a reprint of Showcase #37. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Schwartz kept editorial records for Robert Kanigher who edited this issue. The records show the initials JG next to the date for the lettering for this story.