Limit your search
Topic
- United States--Appropriations and expenditures 28
- River engineering 25
- West (U.S.) 19
- Canals--Design and construction--Costs 6
- Locks (Hydraulic engineering) 4
- Railroad engineering 3
- Transportation 3
- Dams--Design and construction 2
- Bodies of water 1
- Railroad construction & maintenance 1
Region
- Columbia River >> Clatsop County >> Oregon >> United States 28
- Portland >> Clackamas County >> Oregon >> United States 14
- Willamette River >> Multnomah County >> Oregon >> United States 13
- Clatskanie River >> Columbia County >> Oregon >> United States 5
- Pacific Ocean >> Earth 5
- Vancouver >> Clark County >> Washington >> United States 5
- Washington >> United States 5
- Cowlitz River >> Cowlitz County >> Washington >> United States 3
- Oregon >> United States 3
- Oregon City >> Clackamas County >> Oregon >> United States 3
- more ยป
Type
- Text 27
- Collection 1
Decade
- 1910-1919 28