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Topic
- River engineering 3
- United States--Appropriations and expenditures 3
- River surveys 2
- United States. Congress--Records and correspondence 2
- Bridges--Design and construction 1
- Canals--Design and construction--Costs 1
- Dams--Design and construction 1
- Locks (Hydraulic engineering) 1
- Military maps 1
- Military topography 1
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Region
- Astoria >> Clatsop County >> Oregon >> United States 3
- Columbia River >> Clatsop County >> Oregon >> United States 3
- Pacific Ocean >> Earth 3
- Portland >> Clackamas County >> Oregon >> United States 3
- Priest Rapids >> Kittitas County >> Washington >> United States 3
- Snake River >> British Columbia >> Canada 3
- Willamette River >> Multnomah County >> Oregon >> United States 3
- Bellingham Bay >> Whatcom County >> Washington >> United States 2
- Cowlitz River >> Cowlitz County >> Washington >> United States 2
- Eugene >> Lane County >> Oregon >> United States 2
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License
- Creative Commons: Public Domain Mark 1.0 3
Type
- Collection 3