Errold G. Bahl (EGB, October 26, 1894 – October 26, 1930) was one of the early birds of aviation, an aircraft pilot, mechanic, barnstormer, and entrepreneur. He attended the School of Military Aeronautics, flew in Latin America, was a mentor to Lindbergh, and formed the Harding, Zook and Bahl Airplane Corporation. This collection includes material relating to his life in aviation, as well as the Harding, Zook and Bahl Corporation.