Willamette Valley
- Willamette Heritage Center: The Willamette Heritage Center interprets the history of the Thomas Kay Woolen Mill (1889-1962) and the Oregon Methodist Mission (1834-1844) and includes the Marion County Historical Society.
- Heritage Museum, Independence
- Oregon State University Archives
- University of Oregon Special Collections and Archives
- Linn-Benton Community College Archives
- Oregon State Archives
- Oregon State Library
- Asahel Bush House Museum
- Salem Art Association
- State of Oregon Law Library
- Oregon Museums Association
Portland Area Archives and Museums
- City of Portland Archives and Records Center
- Multnomah County Archives
- Portland State University Archives
- Lewis and Clark College Archives
- Reed College Special Collections and Archives
- Oregon Jewish Museum
- Oregon Historical Society
- University of Portland Archives and Artifacts
- Multnomah County Library
- Multnomah County Records Programs
- Oregon Health and Science University Historical Collections
- Pacific University Archives
- Oregon Nikkei Legacy Center
- Hellenic-American Cultural Center and Museum
- Portland Art Museum
- Portland Police Historical Society
- Mazamas Archives and Museum