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Creator
- United States. Army. Office of the Chief of Engineers 29
Topic
- United States--Appropriations and expenditures 29
- River engineering 27
- River surveys 14
- West (U.S.) 11
- Canals--Design and construction--Costs 4
- Dams--Design and construction 4
- Locks (Hydraulic engineering) 4
- Railroad engineering 3
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Region
- Portland >> Clackamas County >> Oregon >> United States 29
- Willamette River >> Multnomah County >> Oregon >> United States 29
- Columbia River >> Clatsop County >> Oregon >> United States 22
- Yamhill River >> Yamhill County >> Oregon >> United States 9
- Vancouver >> Clark County >> Washington >> United States 7
- Clackamas Rapids >> Clackamas County >> Oregon >> United States 6
- Eugene >> Lane County >> Oregon >> United States 6
- Pacific Ocean >> Earth 6
- Corvallis >> Benton County >> Oregon >> United States 5
- Cowlitz River >> Cowlitz County >> Washington >> United States 5
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Rights
- No Copyright - United States 29
Type
- Text 25
- Collection 4