Collection includes correspondence, financial records and legal documents of the D. P. Thompson Company, regarding investments and properties of David P. Thompson's estate; personal correspondence to Mary Relief Thompson, wife of David P. Thompson; and microfilm of letters sent to David P. Thompson from family members in Cadiz, Ohio. Thompson (1834-1901) was a businessman and mayor of Portland, Oregon.

Manuscript Bond of Enrollment, Master James D. Miller, D. P. Thompson and J. L. Barlow, for the steamer Yamhill, Canemah, Oregon, October 19, 1865; and manuscript Bond of License, Master James D. Miller, D. P. Thompson and J. L. Barlow, for the steamer Union, Canemah, Oregon, October 19, 1865.