This is Thrilling Mystery for April 1937, cover by Rudolph Berlarski. The ISFDB entry for this issue is here. Unfortunately this small image preserved at Galactic Central is the only version of the cover I could find.
This is Thrilling Mystery for April 1937, cover by Rudolph Berlarski. The ISFDB entry for this issue is here. Unfortunately this small image preserved at Galactic Central is the only version of the cover I could find.