The Gray Tractor 20-35 A is a standard-tread farm tractor produced by Gray Tractor from 1914 to 1916 in Minneapolis, Minnesota, USA. It features a Waukesha 7.8L 4-cylinder liquid-cooled gasoline engine, a 2-speed gear transmission, and delivers 20 hp drawbar power and 35 hp belt power. The tractor weighs 8000 lbs and has an open operator station with manual steering. It was originally priced at $2,150 in 1916.