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Creator
- United States. Army. Office of the Chief of Engineers 4
Topic
- River engineering 4
- United States--Appropriations and expenditures 3
- Bodies of water 2
- Railroad engineering 2
- Bridges--Design and construction 1
- Canals--Design and construction--Costs 1
- Dams--Design and construction 1
- Locks (Hydraulic engineering) 1
- Northwest, Pacific 1
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 4
- Pacific Ocean >> Earth 4
- Snake River >> British Columbia >> Canada 4
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 3
- Cowlitz River >> Cowlitz County >> Washington >> United States 3
- Eugene >> Lane County >> Oregon >> United States 3
- Lewiston >> Nez Perce County >> Idaho >> United States 3
- Portland >> Clackamas County >> Oregon >> United States 3
- Priest Rapids >> Kittitas County >> Washington >> United States 3
- Vancouver >> Clark County >> Washington >> United States 3
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- No Copyright - United States 4
Type
- Collection 3
- Text 1