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Creator
- United States. War Department 72
- United States. Department of the Interior 17
- United States. Bonneville Power Administration 16
- Elliott, T. C. (Thompson Coit), 1862-1943 11
- Powell, Charles Francis, 1843-1907 5
- Wilson, John M. (John Moulder), 1837-1919 3
- Michler, N. (Nathaniel), 1827-1881 2
- Rogers, W. A. (William A.) 2
- Shaw, Emma 2
- Willey, Day Allen 2
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Topic
- Northwest, Pacific 122
- River engineering 77
- United States. Congress--Records and correspondence 74
- Rivers 61
- Bodies of water 51
- River surveys 29
- Photography 27
- Rapids 23
- River channels 22
- Harbors 20
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Region
- Columbia River >> Douglas County >> Washington >> United States 139
- Oregon >> United States 64
- Washington >> United States 61
- Willamette River >> Multnomah County >> Oregon >> United States 52
- Snake River >> Franklin County >> Washington >> United States 25
- Coos Bay >> Coos County >> Oregon >> United States 13
- California >> United States 11
- Idaho >> United States 9
- Bonneville Dam >> Multnomah County >> Oregon >> United States 6
- Clearwater River >> Nez Perce County >> Idaho >> United States 6
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Language
- English 139
Type
- Text 111
- Image 17
- Collection 11
Format
- image/jpeg 81
- application/pdf 33
- image/tiff 14
- application/xml 11
Institution
- University of Oregon 139