1957 NH Self-Propelled Baler - only 305 were produced and very few remain. Built using components from several different manufacturers including wheels from a Cockshutt tractor and a rear axle and 4-speed transmission from a Ford truck. Two 15 hp Wisconsin engines operate the baler: one driving the baler and the other powers the baling operation. One electrical system provides power to the starter on either engine. but the engines operate independently with different controls for each.