Charles Tilt first began producing cars at his Chicago based company in 1905 but switched to trucks in 1911. The Diamond T Model 201 has been called the Cadillac of pickup trucks. In 1958, Diamond T was bought by the White Motor Company which in 1967 merged with Reo to form Diamond Reo. From 1938 to 1949 Diamond T produced the classic Model 201 one ton pickup truck. Power was provided by a Hercules six-cylinder engine.