The first practical demonstration of this tractor took place in a peat field on Roberts Island on November 24, 1904, and was patented and in production by December of 1907. The existing machine represents the earliest gasoline-powered track-type tractors that were to help revolutionize agriculture, logging, construction, road building, and transportation around the world. Its design and development is credited to Benjamin Holt (1849-1920), president of the Holt Manufacturing Company of Stockton.
Wisconsin Historical SocietyEra_date_from: 1918
In its infancy, Hangar Nine housed Curtiss JN-4s ("Jennys") like the one Charles Lindbergh landed there when he reported for duty as a flying cadet in 1924.
As the U.S. was preparing to enter World War I, the Army raced to build an entire airfield, complete with 16 wooden hangars, successfully completing it in less than a year. The last remaining World War I facility of its kind, Hangar Nine at Brooks Air Force Base represents the emergence of fast-track construction methods using available materials and the skills of a local workforce.