Oral history interview with Lorna Mae Grabe conducted by Bob Zybach on December 28, 1989, as part of the Soap Creek Valley History Project. Grabe was involved in the Soap Creek Schoolhouse Foundation, which was formed to preserve the Soap Creek Schoolhouse.

Papers of Lewis L. McArthur, including correspondence and documentation relating to Oregon Geographic Names; correspondence and records relating to the Historic Columbia River Highway; and papers relating to other historic sites and historic preservation efforts. McArthur (1917-2018) published the fourth, fifth, sixth, and seventh editions of Oregon Geographic Names, and was active in historic preservation.

Oral history interview with Elisabeth Walton Potter conducted by Linda S. Dodds on January 25, 1980. Potter served as coordinator of the National Register for the State Historic Preservation Office of Oregon.