The on-sale date is the publication date reported in the U. S. Copyright Office filing.
Robinson sneaked in his initials on the lamp.
Inker and letterer credits by Craig Delich.
Second appearance of Wing in costume (first seen in costume in World's Finest Comics #4). Order of Wing in costume determined by copyright dates (World's Finest #4 on Nov 10th 1941, Detective #59 on Nov 22nd 1941).