Papers of Theodore J. Eckerson (1820-1906), primarily relating to his military career, but also including letters from Benjamin L. E. Bonneville (1796-1898) and Ulysses S. Grant (1822-1885). Eckerson, who emigrated to Oregon in 1849, was in the U.S. Army for most of his adult life. He fought in the Mexican-American War and, in the 1850s, supplied Euro-American volunteers who were fighting Native peoples in the Pacific Northwest.