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Creator
- United States. Army. Office of the Chief of Engineers 18
Region
- Oregon >> United States 18
- Columbia River >> Clatsop County >> Oregon >> United States 14
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- Willamette River >> Multnomah County >> Oregon >> United States 6
- Portland >> Clackamas County >> Oregon >> United States 4
- Pacific Ocean >> Earth 3
- British Columbia >> Canada 2
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 2
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 2
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- image/jpeg 18
Institution
- University of Oregon 18