The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Part 2, Periodicals, 1942, New Series, Vol. 37, No. 4.
Bob Rogers verified that he did the backgrounds in an interview w/Roger Hill in Alter-Ego #7 (Winter, 2001). In that interview, Hill mistakingly stated this cover was found on Master #27.
In an interview with Roger Hill in Alter-Ego #6 (Autumn, 2000), Bob Rogers verifies that Mac Raboy only drew the vulture on the splash page, and Rogers did the ghost town. The article reprints a partial splash page to this story to show same.
first Balbo strip
Originally credited to Parkhurst, but this is the same artist as on about 23 of the preceding Buck Jones stories, Ralph Carlson. He can be recognized by his horses: very long, narrow, tapering heads with two marked lines leading to the nostrils and by the movement of the legs. Not so many horses in this story, but the dog on page 3 has the same outstretched front legs as many of his horses. Compare with his Buck Jones stories and the Rocky Lane stories by Carlson.