Donelson Mini Mule was produced by my uncle H J (Jake) Donelson. They were originally made at his plant outside Marshalltown, IA but were later made in Ames, IA. It is the same company that made the Swamp Fox ATV, SpreadsAll grain spreader and Donelson bicycles. My brother and I both had Mini Mules. Powered by a Tecumseh engine 5 hp or 3.5 hp if I remember correctly. Also offered an optional ski that fit over the front wheel!