On sale date from the publication date reported to the U.S. Copyright Office found in the Catalog of Copyright Entries, Part 2, Periodicals, 1943, New Series, Volume 38, Number 2. Class B periodical. Copyright registration number 586936. Fawcett reported the cover date as being May 19, 1943, but was actually published as May on the cover only.
ripoff of Verne's 20,000 LEAGUES UNDER THE SEA
Writer credit suggested by textual analysis from Lou Mougin.