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.
Phil Metschan, Sr. (1840-1920) was born in Hesse-Cassel, Germany and travelled to the United States and settled in Canyon City, Oregon where he ran a store, became Oregon state treasurer, and established a hotel in Portland, Oregon. The collection contains correspondence, diaries, financial and legal records, pioneer family files, photographs and memorabilia.