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Creator
- United States. War Department 26
- United States. Army. Corps of Engineers 13
- Oregon Touring Bureau 7
- Powell, Charles Francis, 1843-1907 5
- United States. Agricultural Stabilization and Conservation Service 4
- WAC Corp. 4
- Smith, Katherine Louise 3
- United States. Army Map Service 3
- United States. Commodity Stabilization Service 3
- Ballou, William Hosea, 1857-1937 2
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Topic
- Rivers 153
- Bodies of water 134
- Northwest, Pacific 129
- Photography 77
- Aerial photographs 39
- Riparian areas 38
- Mountains 33
- River engineering 30
- United States. Congress--Records and correspondence 28
- River surveys 26
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Region
- Oregon >> United States 153
- Columbia River >> Clatsop County >> Oregon >> United States 77
- Columbia River >> Douglas County >> Washington >> United States 65
- Washington >> United States 64
- Willamette River >> Multnomah County >> Oregon >> United States 32
- Snake River >> Franklin County >> Washington >> United States 22
- Coos Bay >> Coos County >> Oregon >> United States 12
- California >> United States 11
- Idaho >> United States 9
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 6
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Type
- Image 97
- Text 47
- Collection 9
Format
- image/jpeg 58
- image/tiff 54
- application/pdf 32
- application/xml 9
Institution
- University of Oregon 153