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Creator
- United States. Army. Office of the Chief of Engineers 112
- Lorraine, Madison Johnson 101
- Fisk, W. L. (Walter Leslie), 1855- 76
- Harts, W. W. (William Wright), 1866-1961 76
- United States. War Department 30
- United States. Army. Corps of Engineers 15
- Powell, Charles Francis, 1843-1907 5
- United States. Agricultural Stabilization and Conservation Service 5
- Smith, Katherine Louise 4
- Prentiss, A. M. (Arthur M.) 3
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Topic
- Bodies of water 513
- Rivers 300
- Northwest, Pacific 267
- West (U.S.) 159
- Photography 132
- River engineering 115
- Explorers 88
- Trees 70
- Riparian areas 67
- Discovery and exploration 59
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 276
- Oregon >> United States 149
- Willamette River >> Multnomah County >> Oregon >> United States 141
- Columbia River >> Douglas County >> Washington >> United States 99
- Washington >> United States 85
- Yamhill River >> Yamhill County >> Oregon >> United States 81
- Snake River >> British Columbia >> Canada 79
- Cascade Locks >> Hood River County >> Oregon >> United States 77
- Snake River >> Franklin County >> Washington >> United States 51
- Umatilla Indian Reservation >> Umatilla County >> Oregon >> United States 48
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Rights
- No Copyright - United States 513
Type
- Text 252
- Image 250
- Collection 11
Format
- image/jpeg 256
- image/tiff 206
- application/pdf 40
- application/xml 11
