On-sale date from Comic Reader #104. Asherman credit from letters page.
Information on several sequences submitted by David R. Potts through the GCD Errors list.
Script credited to Bob Haney in the table of contents.
Script credited to Bob Kanigher in the table of contents.
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 story.
Story in two parts of 5.67 and 5.5 pages.