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Creator
- United States. War Department 30
- Powell, Charles Francis, 1843-1907 5
- Wilson, John M. (John Moulder), 1837-1919 3
- Gibson, Charles R. (Charles Robert), 1870-1931 2
- Gillespie, G. L. 2
- Kinney, M. J. H. 2
- Michler, N. (Nathaniel), 1827-1881 2
- United States. Army. Office of the Chief of Engineers 2
- United States. Congress. House 2
- Fisk, W. L. (Walter Leslie), 1855- 1
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Topic
- Rivers 39
- Bodies of water 36
- River engineering 33
- United States. Congress--Records and correspondence 32
- River surveys 30
- Northwest, Pacific 24
- River channels 23
- Harbors 21
- West (U.S.) 17
- Canals 13
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 39
- Oregon >> United States 35
- Columbia River >> Douglas County >> Washington >> United States 34
- Washington >> United States 30
- Snake River >> Franklin County >> Washington >> United States 24
- California >> United States 13
- Coos Bay >> Coos County >> Oregon >> United States 13
- 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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Language
- English 39
Type
- Text 34
- Collection 4
- Image 1