Oliver Cromwell Applegate (1845-1938), the son of Lindsay and Elizabeth Applegate (Applegate Trail pioneers), spent his career working with Oregon Indians. He was a subagent with the Indian Service at Yainax, and during the Modoc War he served as an interpreter and a scout. In 1873, he became a U.S. Commissioner, and in 1898 was appointed Klamath Indian Agent. After his resignation in 1905 he continued to work with the federal government on Indian issues such as the Grande Ronde tribal status challenge. The Oliver Cromwell Applegate papers consist mainly of Applegate family correspondence, with some miscellaneous bills, newspaper clippings, pension papers, documents, journals and the 1868 diary of Frank Applegate.
Binger Hermann (1843-1926) was a Roseburg attorney and politician who represented Oregon in the U.S. House of Representatives for sixteen years, and served as commissioner of the General Land Office (GLO) under presidents William McKinley and Theodore Roosevelt. The collection (1888-1920) contains Hermann's personal and professional papers.