Just looking in to Mr Wohlforth, if he turns out to be correct. Please let me know, I pass by his final resting spot every so often. I will see if I can locate his head stone for you. I dont think its a very large place and I can try.
This might be of interest
Robert Wadsworth in the 1940 Census | Ancestry.com
Good catch. I wish I had thought about that option. Wadsworth is indeed a candidate last name, and the fact that this guy lives in West Hartford makes him a better candidate than Wohlforth, geographicaly speaking. His profession is Insurance Underwriter, which doesn't immediately speak to any special pull in wartime, but maybe he had a back-channel relationship with the Wessons; Springfield was just a few miles up the road.
If the billing address on the invoice is 39 Stratford Road, this is the guy.