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.
Busy Arnold, in a 1972 interview, states that Moreira did some early pencils on Kid Eternity material, and his likely inker was Elgin.
Pencils credits from Bob Hughes.
Script credits suggested by the Who's Who
Inks credit suggested by the Who's Who.
All Gustavson credits verified and courtesy of Terry Gustafson, son of Paul Gustavson.