The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Part 2, Periodicals, 1943, New Series, Vol. 38, No. 1.
Artist revision from C.C. Beck by Craig Delich 2011-28-11 to Marc Swayze per Swyaze's column in Alter-Ego #19 verifying he did the cover.
Some reprint information and synopsis added by Craig Delich (Jan. 14, 2007).
Mary Marvel next appears in Wow Comics #9.
P. C. Hamerlinck, in Alter Ego #147 (July 2017), asserts that Swayze did the entire art job on this story. So reference to Swayze only doing the art on the Mary Marvel figures only removed.
Art credit revisions by Craig Delich, per P.C. Hamerlinck in Alter Ego #145 (March 2017).