This collection contains the papers of G. Grahame Duce, aeronautical enthusiast and president of Duce Aeronautical Research in Baltimore, Maryland. The collection includes various airplane notes and characteristics from 1920 to 1939, an approved aircraft index from 1947, and manuscript drafts of articles discussing subjects such as new paratroop devices, the fastest long-ranger, the Martin XB-48, the building of XB-48, airlines in the red, pilot judgment, air races, the Boeing XB-47, the jet pilot, and the future of jet planes.