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Topic
- Bodies of water 17
- Rivers 17
- River engineering 14
- River surveys 14
- United States. Congress--Records and correspondence 14
- River channels 13
- Harbors 11
- Northwest, Pacific 10
- West (U.S.) 8
- Canals 7
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Region
- Columbia River >> Douglas County >> Washington >> United States 16
- Snake River >> Franklin County >> Washington >> United States 15
- Washington >> United States 15
- Willamette River >> Multnomah County >> Oregon >> United States 15
- Oregon >> United States 14
- Coos Bay >> Coos County >> Oregon >> United States 11
- Clearwater River >> Nez Perce County >> Idaho >> United States 5
- Cowlitz River >> Cowlitz County >> Washington >> United States 5
- Idaho >> United States 5
- California >> United States 4
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Language
- English 17
Type
- Text 14
- Image 2
- Collection 1
Decade
- 1880-1889 17