Robert Leicester Hall was born in Taunton, Massachusetts 1905. After graduating in 1927 from the University of Michigan, with a degree in Mechanical Engineering, he joined the
Granville Brothers Aircraft, where he was the chief engineer. He designed the
Gee Bee Model Z racer, the "City of Springfield," which swept the competition in every contest in the National Air Races of 1931. On September 5, Hall flew the Gee Bee Z to victory in the General Tire and Rubber Trophy race.
Lowell Bayles flew the aircraft the next day to victory in the free-for-all event. ==The Springfield Aircraft Co.==