The Denning C is a standard-tread farm tractor built in 1914 by Denning in Cedar Rapids, Iowa, USA. It features a 4-cylinder liquid-cooled gasoline engine, two-wheel drive, and manual steering with an open operator station. The tractor produces 20 hp at the drawbar and 30 hp at the belt, capable of pulling 3 plows. It has a wheelbase of 90 inches and weighs 4000 lbs.