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Creator
- United States. War Department 25
- United States. Army. Corps of Engineers 6
- Powell, Charles Francis, 1843-1907 5
- United States. Army. Office of the Chief of Engineers 4
- Michler, N. (Nathaniel), 1827-1881 2
- United States. Commodity Stabilization Service 2
- WAC Corp. 2
- Wilson, John M. (John Moulder), 1837-1919 2
- Doerksen, Harvey R. 1
- Geological Survey (U.S.) 1
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Topic
- Bodies of water 81
- Rivers 77
- Northwest, Pacific 66
- River engineering 31
- Photography 28
- United States. Congress--Records and correspondence 27
- River surveys 26
- Riparian areas 22
- River channels 21
- Aerial photographs 19
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Region
- Washington >> United States 81
- Columbia River >> Douglas County >> Washington >> United States 75
- Oregon >> United States 65
- Willamette River >> Multnomah County >> Oregon >> United States 28
- Snake River >> Franklin County >> Washington >> United States 22
- Coos Bay >> Coos County >> Oregon >> United States 12
- California >> United States 11
- Idaho >> United States 9
- Clearwater River >> Nez Perce County >> Idaho >> United States 6
- San Francisco Bay >> San Mateo County >> California >> United States 6
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Type
- Image 46
- Text 34
- Collection 1
Format
- application/pdf 30
- image/jpeg 25
- image/tiff 25
- application/xml 1
Institution
- University of Oregon 81