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Creator
- United States. War Department 79
- Powell, Charles Francis, 1843-1907 5
- Wilson, John M. (John Moulder), 1837-1919 3
- Gillespie, G. L. 2
- Michler, N. (Nathaniel), 1827-1881 2
- United States. Congress. House 2
- Willey, Day Allen 2
- Fisk, W. L. (Walter Leslie), 1855- 1
- Harts, W. W. (William Wright), 1866-1961 1
- Jones, William A. (William Albert), 1841-1914 1
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Topic
- River engineering 85
- United States. Congress--Records and correspondence 80
- Northwest, Pacific 70
- Rivers 36
- Bodies of water 33
- River surveys 31
- Harbors 23
- River channels 23
- Rapids 21
- Canals 19
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Region
- Columbia River >> Douglas County >> Washington >> United States 85
- Willamette River >> Multnomah County >> Oregon >> United States 56
- Oregon >> United States 48
- Washington >> United States 38
- Snake River >> Franklin County >> Washington >> United States 26
- 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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License
- Creative Commons: Public Domain Mark 1.0 85
Type
- Text 82
- Collection 3