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Creator
- United States. Army. Office of the Chief of Engineers 15
- Fisk, W. L. (Walter Leslie), 1855- 1
- Harts, W. W. (William Wright), 1866-1961 1
Topic
- United States--Appropriations and expenditures 15
- River engineering 14
- River surveys 7
- West (U.S.) 6
- Bodies of water 3
- Dams--Design and construction 3
- Locks (Hydraulic engineering) 3
- Railroad engineering 3
- Transportation 3
- Bridges--Design and construction 2
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Region
- Yamhill River >> Yamhill County >> Oregon >> United States 15
- Willamette River >> Multnomah County >> Oregon >> United States 13
- Portland >> Clackamas County >> Oregon >> United States 10
- Columbia River >> Clatsop County >> Oregon >> United States 8
- Oregon City >> Clackamas County >> Oregon >> United States 7
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 6
- Corvallis >> Benton County >> Oregon >> United States 6
- Cowlitz River >> Cowlitz County >> Washington >> United States 5
- Eugene >> Lane County >> Oregon >> United States 5
- Snake River >> British Columbia >> Canada 5
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Type
- Text 11
- Collection 4