Large 36x24" 3-view blueprint of the Welch OW-7M aircraft. Only eight of these aircraft were built in the late 1930s. This print is inscribed to aviation collector Hans Dam (deceased) by Drina Welch Abel, sister of Welch Aircraft founder Orin Welch, in 1983. Orin Welch was a self-taught aeronautical designer and manufacturer who was dedicated to making a simple, safe and economical aircraft. Orin was lost on March 13, 1943 while flying a mission over the "Hump" in support of the Allies in WWII. Early production of the Welch aircraft began in Anderson, Indiana and this is an obscure and unique piece of Indiana aviation history.