Here is another empty Registered Letter that was in that same box. It is dated 12 April 1940 on the reverse, from Donald Wandrei to Derleth. I speculate that it contained Donald share of the the expense to produce “The Outsider and Others” likely a cashier’s check, money order, but certainly not cash. The letter and the amount might well be in the archives at The State Historical Society. This is dated before America entered the war, and Donald was subsequently called up to serve.
Follow the Money