Oklahoma Steam Threshers Association - March of Machines - Pawnee, OK-based group preserving Oklahoma's rich heritage of the early threshing days of the early 1900's; steam traction engines and other old iron. hometown.aol.com/marchofmachines
The March of Machines - Official site of Pawnee-based Oklahoma Steam Threshers Association, dedicated to preserving Oklahoma's heritage of the threshing days of the early 1900s. Steam traction engines and other old iron. marchofmachines.com
