Collection includes research notes and typed drafts of articles planned as entries in Howard McKinley Corning's "Dictionary of Oregon History."

Research materials by John H. Hall, who studied and wrote on the life of John Minto (1822-1915), an emigrant to Oregon in 1844. Materials include typed transcripts of Minto's autobiography and his other writings, notes on Minto, and typescripts of a paper that Hall wrote about Minto for a class at Reed College in 1964.

Elizabeth Landis (born 1908) was the granddaughter of pioneer Warren N. Vaughn, who settled in the Kilchis River Valley in 1853, and the great-granddaughter of Jacob S. Elliot, a homesteader of 1862. Collection includes "History of Kilchis River Valley" by Landis, along with maps, photographs and other illustrations, and a bibliography. Also included is a handwritten copy of a song, "Oregon," written by Vaughn, 1880.

Collection consists of photocopy typescript notes and comments, 51 pages, undated, on fur trade posts in the mid-19th century, including Fort Langley, British Columbia, Fort Walla Walla, Fort Vancouver, and other Hudson's Bay Company posts.

Collection includes manuscript and typescript correspondence relating to materials at the Bureau of Indian Affairs in Washington, D.C., on which Joseph Rogers Wilson took notes in 1900 and have since gone missing; and manuscript notes, 1900, by Wilson, on same Oregon materials (1841-1850).

Collection consists of correspondence, articles, research notes, and newspaper clippings regarding the Hood River Valley area, including information on Camp Drum and Fort Dalles, cemetery and land claim information and census data for Wasco County.

Collection includes research notes regarding Oregon and Northwest history. Theresa Truchot was a local historian of early Lake Oswego. She was the author of many publications and conducted oral histories of early Lake Oswego residents. She initiated the Junior Historical Society and was a speaker on local history topics.