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.
Doug Martin credits Lou Fine. Inking style is not the same as the previous issue.
Lance Blackwood, according to the Who's Who, is a by-line found on this strip, and is also the pen name of Dan Zolnerowich. Zolne did no writing to my knowledge and the Who's Who lists him as artist only for this feature. Added by Craig Delich 2013-7-17.