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Creator
- United States. War Department 29
- United States. Army. Corps of Engineers 13
- Henderson, Robert W. (Robert Wesley), 1914-2006 8
- 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
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Topic
- Rivers 164
- Bodies of water 137
- Northwest, Pacific 130
- Photography 77
- Aerial photographs 39
- Riparian areas 38
- Mountains 34
- River engineering 33
- United States. Congress--Records and correspondence 31
- River surveys 29
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Region
- Oregon >> United States 164
- Columbia River >> Clatsop County >> Oregon >> United States 77
- Columbia River >> Douglas County >> Washington >> United States 68
- Washington >> United States 67
- Willamette River >> Multnomah County >> Oregon >> United States 35
- 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 105
- Text 50
- Collection 9
Format
- image/tiff 62
- image/jpeg 58
- application/pdf 35
- application/xml 9
