Saturday Morning Western Pulp: All-Novel Western, May 1940

I don't recall ever hearing anything about this particular pulp magazine, and this isn't really an outstanding cover, or even a very good one.  I'm highlighting it today because I don't recognize even a single one of the authors who have stories in this issue: Clint Douglas, William A. Langford, Ronald Flagg, Jack Arrison, and Austin Renner.  In checking the Fictionmags Index, I see that Douglas and Flagg are known to be house names, and the stories in this issue are the only ones listed for Arrison and Renner, so I'd be a little suspicious of them, too.  Langford is the author of a few Western and detective stories in a variety of pulps from 1938 to 1940, so maybe he was a real person.  For sheer obscurity, though, you might have to go a ways to beat this issue of this pulp.