Mr. Maddox and the Gray GhostDIME DETECTIVE MAGAZINE. July 1938 https://pulpcovers.com/wp-content/uploads/2018/05/DIME-DETECTIVE-MAGAZINE.-July-1938-658x952.jpgAlso featuring Race Williams! A Corpse For A Corpse and Footprints On A Brain via info headinginfo contentAlso featuring Race Williams! A Corpse For A Corpse and Footprints On A Brainvia
I agree that Footprints On A Brain is a noteworthy title. It is hard to imagine the storyline.
The cover is the same hidden gun as this
H. William Reusswig’s art.