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Creator
- United States. Army. Corps of Engineers 13
- Henderson, Robert W. (Robert Wesley), 1914-2006 8
- United States. Agricultural Stabilization and Conservation Service 4
- WAC Corp. 4
- United States. Army Map Service 3
- United States. Commodity Stabilization Service 3
- EROS Data Center 2
- Geological Survey (U.S.) 2
- Prentiss, A. M. (Arthur M.) 2
- United States. Forest Service 2
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Topic
- Rivers 105
- Northwest, Pacific 95
- Bodies of water 94
- Photography 55
- Aerial photographs 38
- Riparian areas 37
- Mountains 28
- Dams 22
- Postcards 12
- Formations (Geology) 11
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Region
- Oregon >> United States 105
- Columbia River >> Clatsop County >> Oregon >> United States 62
- Washington >> United States 31
- Columbia River >> Douglas County >> Washington >> United States 29
- Bonneville Dam >> Multnomah County >> Oregon >> United States 4
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 4
- Pillars of Hercules >> Multnomah County >> Oregon >> United States 4
- Hood River >> Hood River County >> Oregon >> United States 2
- Saint Peters Dome >> Multnomah County >> Oregon >> United States 2
- Angels Rest >> Multnomah County >> Oregon >> United States 1
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Type
- Image 105
Format
- image/tiff 62
- image/jpeg 43