The Interstate Engine & Tractor Co. was formed in 1915 at Waterloo, Iowa after a reorganisation of the company that had previously built Sandow gas engines. Interstate initially offered two different models of tractor, the 10-20 hp "Plow Boy" and the 13-30 hp "Plow Man", which used four-cylinder Waukesha and Buda engines, respectively. The Plow Boy was soon dropped and replaced with a larger version of the Plow Man rated as 15-30 hp. Financial difficulties in 1919 led to another rebranding of the company, this time as the Plow Man Tractor Co., but they only built tractors for a few more years.

(Click on images below to enlarge)

Interstate Plow Man 13-30 at Bonanzaville, Fargo, North Dakota, USA in 2011.


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