The Gilmore Brothers – Aviation Pioneers (1931)

From the Prelinger Archives – B&W, Silent: Grass Valley, California: Gilmore Brothers and their planes including cabin model that was never flown but designed in 1908

Lyman Wiswell Gilmore, Jr. (June 11, 1874 Beaver Creek, Thurston County, Washington- February 18, 1951) was an aviation pioneer. In Grass Valley, California, USA, he built a steam-powered airplane and claimed that he flew it on May 15, 1902. Due to the requirement of a heavy boiler and the dependency on coal as a power source, the flights would have been short. Proofs of his claim were lost in a 1935 hangar fire.