Designed by Bernard H. Pietenpol in 1928, this was the forerunner of today's homebuilt aircraft using automobile engines. Powered by a Model B Ford engine, its simplicity of design, low cost in building, and docile handling characteristics made it a popular project for hobbyists in the 1930s. The radiator for this water-cooled engine was placed in the most beneficial position between the leading edge of the wing and the top of the fuselage. This may seem quite a disadvantage to the pilot, but the radiator produced warm air for the cockpit and also eliminated the need for a windscreen. Full size shop drawings could be ordered for $7.50 from "Modern Mechanics" and "Inventions Magazine." Pietenpols are still being built today with varied modifications. Donated by Charles Duff of Fredericksburg, Va. (Serial #410)