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Topic
- United States. Congress--Records and correspondence 123
- Northwest, Pacific 115
- River engineering 101
- Bridges--Design and construction 16
- Rapids 13
- Harbors 12
- Jetties 5
- Riparian areas 4
- Canals 3
- River surveys 3
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 56
- Columbia River >> Douglas County >> Washington >> United States 48
- Oregon >> United States 23
- Washington >> United States 20
- Snake River >> Franklin County >> Washington >> United States 6
- Cathlamet Bay >> Clatsop County >> Oregon >> United States 4
- Columbia River >> Clatsop County >> Oregon >> United States 2
- Chehalis River >> Grays Harbor County >> Washington >> United States 1
- Cowlitz River >> Cowlitz County >> Washington >> United States 1
Format
- image/jpeg 123
Institution
- University of Oregon 123
Decade
- 1890-1899 123