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. 2.
Pencil and ink credits from Keif Fromm via the GCD Error List (22 April 2007), based on a Jim Amash interview with Fox in Alter-Ego #12. The original indexer credited both pencils and inks to Reed Crandall ?.
This was the first cover done by Fox for Quality Comics.
Script credit suggested by the Who's Who.
All Gustavson credits verified and courtesy of Terry Gustafson, son of Paul Gustavson.