Bernard Harold Pietenpol (1901-1984) (Dutch pronunciation is Pee Ten Pol)

Born, Spring Valley Cherry Grove Township Minnesota. He learned to fly in the 1920's, and constructed his first homebuilt airplane in 1923 with a Ford Model T engine (Sky Scout).

In April of 1930, he brought two Ford Model A powered airplanes to Minneapolis. He showed the two aircraft to the editor of Modern Mechanics magazine to prove that an auto engine powered aircraft could indeed fly.