The Avery Manufacturing Co. made Steam Traction Engines (ca 1880's), Threshers, Gas Tractors, Corn Planters, Stalk Cutters, Cultivators, Gasoline Powered Trucks.
Information Sources
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Encyclopedia of American Steam Traction Enginesby Jack Norbeck, 1975 page 72
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Steam Power on the American Farm by Reynold M. Wik, 1953 page 254