Some info verified using a DCM scan (http://digitalcomicmuseum.com/)
Called "Doc Strange" in cover text; name "Dr. Strange" used for last time under cover cameo portrait and interior story.
The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Part 2, Periodicals, 1940, New Series, Vol. 35, No. 4.
Artist revision from George Mandel to Willaim Smith by Hames Ware, added by Craig Delich 2012-12-25, per Alter Ego #114 (December 2012).