Limit your search
Topic
- United States--Appropriations and expenditures 8
- River engineering 7
- West (U.S.) 6
- Dams--Design and construction 3
- Locks (Hydraulic engineering) 3
- Architectural photography 2
- Historic house museums 2
- McLoughlin House National Historic Site (Oregon City, Or.) 2
- Pioneers--Oregon--Biography 2
- Railroad engineering 2
- more »
Region
- Oregon City >> Clackamas County >> Oregon >> United States 13
- Portland >> Clackamas County >> Oregon >> United States 8
- Yamhill River >> Yamhill County >> Oregon >> United States 8
- Willamette River >> Multnomah County >> Oregon >> United States 6
- Columbia River >> Clatsop County >> Oregon >> United States 5
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 4
- Corvallis >> Benton County >> Oregon >> United States 4
- Eugene >> Lane County >> Oregon >> United States 3
- Pacific Ocean >> Earth 3
- Astoria >> Clatsop County >> Oregon >> United States 2
- more »
License
- Creative Commons: Public Domain Mark 1.0 13
Type
- Text 7
- Image 4
- Collection 2