1942 WWII correspondence archive regarding the 'Wuff-Wah Gun' invention by O.L. Clark of York, Nebraska. Includes a 3-page typed weapon proposal letter to the Secretary of War detailing a recoil-balanced cluster gun design, an official 1-page reply from the National Inventors Council signed by J.C. Green, and the original official Department of Commerce mailing envelope postmarked Washington D.C.