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Creator
- United States. War Department 29
- Powell, Charles Francis, 1843-1907 5
- United States. Army. Office of the Chief of Engineers 4
- Gillespie, G. L. 2
- Michler, N. (Nathaniel), 1827-1881 2
- United States. Congress. House 2
- Wilson, John M. (John Moulder), 1837-1919 2
- Jones, William A. (William Albert), 1841-1914 1
- Pacific Northwest Regional Planning Commission 1
Topic
- River surveys 35
- River engineering 33
- United States. Congress--Records and correspondence 31
- Bodies of water 29
- Rivers 29
- Harbors 22
- River channels 21
- Northwest, Pacific 16
- West (U.S.) 14
- Canals 12
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Region
- Washington >> United States 35
- Oregon >> United States 34
- Columbia River >> Douglas County >> Washington >> United States 30
- Willamette River >> Multnomah County >> Oregon >> United States 30
- Snake River >> Franklin County >> Washington >> United States 22
- California >> United States 12
- Coos Bay >> Coos County >> Oregon >> United States 12
- San Francisco Bay >> San Mateo County >> California >> United States 7
- Clearwater River >> Nez Perce County >> Idaho >> United States 6
- Cowlitz River >> Cowlitz County >> Washington >> United States 6
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Rights
- No Copyright - United States 35
Type
- Text 34
- Collection 1