Dewey Gatson was hired by the Doc Marcell Medicine Show as a
roustabout general laborer at 16 years old. Gatson quickly became known among his peers for his talent with mechanical devices, especially anything with wheels and an engine. Gatson modified a truck into a house car for the Marcell family. He later was put in charge of the show's fleet of twenty cars in
St. Johns, Oregon. Rajo Jack ran a match race against Francis Quinn in
Vancouver, Washington in 1925. His seat fell out of the car as he took the green flag to start the event, and the event had to be canceled. Gatson would soup up all of his own
Model T Fords cars with
Rajo cylinder heads. In the early 1930s, Rajo owner
Joe Jagersberger named Gatson/Jack DeSoto his Los Angeles dealer and salesman, and the name "Rajo Jack" was born. Rajo Jack raced in many forms of motorsport and he used many kinds of engines. Rajo was a mechanic for Quinn at
Legion Ascot Speedway. After Quinn died, Rajo was given his 225 cubic inch Miller engine. He also won a 300 mile stock car race at Oakland Speedway on May 30, 1937. Other wins include a co-win as a relief driver for Tex Peterson in the 1939 500 mile race at Oakland Speedway, and several wins at Southern Ascot Speedway in South Gate, California. Among his wins at Southern Ascot were a 300 lap stock car race on October 1, 1939 and a 250 lap stock car race on June 16, 1940, both driving a
Citroën. ==Awards==