Terratrac

American Tractor Corporation (ATC) was an American manufacturer of tracked type agricultural and industrial tractors based in Churubusco, Indiana. Their tractors were marketed using the "Terra" prefix before a descriptive term. The bulldozers were referred to as Terra Dozers, the general purpose tractors Terra Tracs and the backhoes Terra Hoes.

ATC was purchased by the J. I. Case Company in 1957 primarily to obtain ATC's unique backhoe design. Within the year Case had married the ATC backhoe to a Case 300 series tractor with a loader creating the first factory built and integrated loader backhoe in the American market.