George Henry Ellis (1884- ) served as an engineer with the U.S. Reclamation Service from 1907-1920 and from 1920-1925 with the Montana State Engineer's Office. He worked as a hydrological engineer with the Middle West Utilities Company from 1923-1929 before returning to the U.S. Reclamation Service in 1930. Ellis worked on the Shoshone Project in Wyoming and the Sun River Project in Montana while with the Reclamation Service from 1908-1915.
From the description of Papers, 1908-1967. (University of Wyoming, American Heritage Center). WorldCat record id: 28155831