The Masterworks edition lists Alex Schomburg definitely as the cover's artist, so ? removed by Craig Delich 2013-6-28..
The Masterworks edition lists the writer as unknown (even though splash is signed by Lee), pencils by Don Rico (also signed) and unknown, inks by George Klein and unknown. The splash page is signed by Don Rico and that has been added by Craig Delich 2013-6-28.
War Bond promotional advertisement.
The Masterworks edition lists Avison as penciler only and inks by George Klein. This story also appeared in Captain America #19 (October 1942).
Credits per the Masterworks edition, added by Craig Delich 2012-4-24.
Found on the inside back cover.