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Creator
- United States. War Department 49
- 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
- United States. Department of the Interior 1
Topic
- United States. Congress--Records and correspondence 55
- River engineering 51
- Northwest, Pacific 36
- Harbors 33
- River surveys 31
- Bodies of water 30
- Rivers 30
- River channels 22
- West (U.S.) 15
- Canals 13
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Region
- Washington >> United States 55
- Columbia River >> Douglas County >> Washington >> United States 38
- Oregon >> United States 38
- Willamette River >> Multnomah County >> Oregon >> United States 32
- Snake River >> Franklin County >> Washington >> United States 25
- California >> United States 13
- Coos Bay >> Coos County >> Oregon >> United States 12
- Idaho >> United States 7
- San Francisco Bay >> San Mateo County >> California >> United States 7
- Clearwater River >> Nez Perce County >> Idaho >> United States 6
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Type
- Text 53
- Collection 2