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Creator
- United States. War Department 30
- Powell, Charles Francis, 1843-1907 5
- Smith, Katherine Louise 4
- Wilson, John M. (John Moulder), 1837-1919 3
- Gillespie, G. L. 2
- Michler, N. (Nathaniel), 1827-1881 2
- United States. Army. Office of the Chief of Engineers 2
- United States. Congress. House 2
- United States. Department of the Interior 2
- Doerksen, Harvey R. 1
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Topic
- Bodies of water 102
- Rivers 93
- Northwest, Pacific 85
- Photography 62
- River engineering 33
- Riparian areas 32
- United States. Congress--Records and correspondence 32
- River surveys 31
- River channels 23
- Harbors 21
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Region
- Oregon >> United States 89
- Columbia River >> Douglas County >> Washington >> United States 59
- Washington >> United States 52
- Willamette River >> Multnomah County >> Oregon >> United States 39
- Columbia River >> Clatsop County >> Oregon >> United States 36
- Snake River >> Franklin County >> Washington >> United States 27
- California >> United States 13
- Coos Bay >> Coos County >> Oregon >> United States 13
- Idaho >> United States 10
- San Francisco Bay >> San Mateo County >> California >> United States 7
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Language
- English 102
Type
- Image 51
- Text 45
- Collection 6
Format
- image/tiff 45
- application/pdf 40
- image/jpeg 11
- application/xml 6