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Topic
- United States--Appropriations and expenditures 43
- River engineering 37
- West (U.S.) 32
- Canals--Design and construction--Costs 7
- Locks (Hydraulic engineering) 5
- Transportation 5
- Bodies of water 3
- Dams--Design and construction 3
- Railroad engineering 3
- Railroad construction & maintenance 1
Region
- Columbia River >> Clatsop County >> Oregon >> United States 27
- Portland >> Clackamas County >> Oregon >> United States 24
- Willamette River >> Multnomah County >> Oregon >> United States 17
- Clatskanie River >> Columbia County >> Oregon >> United States 7
- Cowlitz River >> Cowlitz County >> Washington >> United States 6
- Oregon City >> Clackamas County >> Oregon >> United States 6
- Yamhill River >> Yamhill County >> Oregon >> United States 6
- Vancouver >> Clark County >> Washington >> United States 5
- Washington >> United States 5
- Pacific Ocean >> Earth 4
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License
- Creative Commons: Public Domain Mark 1.0 43
Type
- Text 42
- Collection 1
Decade
- 1910-1919 43