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Creator
- United States. Army. Office of the Chief of Engineers 107
- Lorraine, Madison Johnson 101
- Fisk, W. L. (Walter Leslie), 1855- 75
- Harts, W. W. (William Wright), 1866-1961 75
- United States. War Department 27
- United States. Army. Corps of Engineers 14
- Powell, Charles Francis, 1843-1907 5
- United States. Agricultural Stabilization and Conservation Service 5
- Smith, Katherine Louise 4
- WAC Corp. 4
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Topic
- Bodies of water 776
- Rivers 307
- Northwest, Pacific 262
- West (U.S.) 153
- Photography 129
- Trees 118
- River engineering 109
- Ships 109
- Explorers 88
- Riparian areas 66
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 272
- Oregon >> United States 145
- Willamette River >> Multnomah County >> Oregon >> United States 131
- Columbia River >> Douglas County >> Washington >> United States 94
- Washington >> United States 81
- Yamhill River >> Yamhill County >> Oregon >> United States 78
- Snake River >> British Columbia >> Canada 76
- Cascade Locks >> Hood River County >> Oregon >> United States 75
- Umatilla Indian Reservation >> Umatilla County >> Oregon >> United States 48
- Snake River >> Franklin County >> Washington >> United States 46
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Type
- Image 525
- Text 245
- Collection 6
Format
- image/tiff 478
- image/jpeg 259
- application/pdf 33
- application/xml 6
Institution
- University of Oregon 776