The Porterfield Model 35 design originated at a Kansas high school, and was purchased by Porterfield and placed into production in 1935. The plane was built with a variety of radial engines in the years prior to World War II. Over 240 of the planes were built, and several survive today as antiques.
Porterfield Model 35 N17490
This 1937 Porterfield, serial 190, is displayed at Yanks Air Museum.