Ellsworth credit from statement of ownership.
On-sale date from copyright registration. On-sale date of December 31, 1941 in ad in Action Comics #45.
Art credits verified by Fred Ray.
The scene for this cover taken from the 1st Fleischer Superman cartoon titled "The Mad Scientist."
Inside front cover.
1st time Jimmy is given a last name. The story title was taken from the Archive.
Published by Detective Comics, Inc.
480 Lexington Ave, NY, NY (indicia says Superman, Inc.)
Editor: W. F. Ellsworth
Owners; Harry, Irwin and Sonia Donenfeld, P. H. Sampliner, P. H. Sampliner (JR) and Joan Sampliner.