March 1943. “Conductor G. Reynolds, checking his waybills in a caboose of the Atchison, Topeka & Santa Fe Railroad between Argentine and Emporia, Kansas.” Photo by Jack Delano for the Office of War Information.
Found at Shorpy
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Playing in the World Game 
Wonder if that’s a Vargas. His work was very popular back in the day.
It certainly was. I just edited the post to provide the full-resolution picture, but the signature is hard to make out.
It is. Doesn’t quite look like “Vargas.” I looked up a list of pin-up artists on wiki, amazing how many of them are women.