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Creator
- United States. War Department 27
- Oregon Touring Bureau 7
- Powell, Charles Francis, 1843-1907 5
- Elliott, T. C. (Thompson Coit), 1862-1943 3
- Smith, Katherine Louise 3
- Wilson, John M. (John Moulder), 1837-1919 3
- Ballou, William Hosea, 1857-1937 2
- Gibson, Charles R. (Charles Robert), 1870-1931 2
- Kinney, M. J. H. 2
- Michler, N. (Nathaniel), 1827-1881 2
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Topic
- Rivers 130
- Northwest, Pacific 105
- Bodies of water 89
- Photography 81
- River engineering 40
- Riparian areas 35
- Mountains 31
- River surveys 29
- United States. Congress--Records and correspondence 29
- River channels 24
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Region
- Oregon >> United States 94
- Columbia River >> Clatsop County >> Oregon >> United States 62
- Columbia River >> Douglas County >> Washington >> United States 61
- Washington >> United States 47
- Willamette River >> Multnomah County >> Oregon >> United States 35
- Snake River >> Franklin County >> Washington >> United States 24
- Coos Bay >> Coos County >> Oregon >> United States 13
- California >> United States 11
- Idaho >> United States 9
- Clearwater River >> Nez Perce County >> Idaho >> United States 6
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Language
- English 130
Type
- Text 64
- Image 48
- Collection 18
Format
- image/tiff 42
- image/jpeg 36
- application/pdf 34
- application/xml 18
Institution
- University of Oregon 130