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Creator
- United States. War Department 33
- Powell, Charles Francis, 1843-1907 5
- United States. Congress. House 2
- Jones, William A. (William Albert), 1841-1914 1
- Michler, N. (Nathaniel), 1827-1881 1
Topic
- Harbors 33
- River engineering 33
- United States. Congress--Records and correspondence 33
- River surveys 21
- Bodies of water 20
- Northwest, Pacific 20
- Rivers 20
- River channels 14
- West (U.S.) 13
- Rapids 8
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Region
- Washington >> United States 32
- Columbia River >> Douglas County >> Washington >> United States 22
- Willamette River >> Multnomah County >> Oregon >> United States 22
- Oregon >> United States 21
- Snake River >> Franklin County >> Washington >> United States 15
- California >> United States 11
- Coos Bay >> Coos County >> Oregon >> United States 11
- San Francisco Bay >> San Mateo County >> California >> United States 7
- Clearwater River >> Nez Perce County >> Idaho >> United States 5
- Idaho >> United States 5
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License
- Creative Commons: Public Domain Mark 1.0 33
Type
- Text 32
- Collection 1