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Creator
- United States. War Department 29
- United States. Army. Corps of Engineers 13
- 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
- EROS Data Center 2
- Geological Survey (U.S.) 2
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Topic
- Bodies of water 137
- Rivers 137
- Northwest, Pacific 121
- Photography 62
- Aerial photographs 39
- Riparian areas 38
- River engineering 31
- United States. Congress--Records and correspondence 31
- River surveys 29
- Mountains 28
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Region
- Oregon >> United States 137
- Columbia River >> Clatsop County >> Oregon >> United States 66
- Columbia River >> Douglas County >> Washington >> United States 66
- Washington >> United States 65
- Willamette River >> Multnomah County >> Oregon >> United States 33
- Snake River >> Franklin County >> Washington >> United States 23
- California >> United States 13
- Coos Bay >> Coos County >> Oregon >> United States 12
- Idaho >> United States 9
- San Francisco Bay >> San Mateo County >> California >> United States 7
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Type
- Image 94
- Text 39
- Collection 4
Format
- image/tiff 51
- image/jpeg 47
- application/pdf 35
- application/xml 4
Collection
- Western Waters Digital Library 137
- Angelus Studio photographs, 1880s-1940s 17