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Creator
- United States. War Department 37
- United States. Department of the Interior 6
- Pond, James B. (James Burton), 1889-1961 4
- United States. Bonneville Power Administration 4
- Powell, Charles Francis, 1843-1907 3
- Smith, Katherine Louise 3
- Gibson, Charles R. (Charles Robert), 1870-1931 2
- Gillespie, G. L. 2
- Kinney, M. J. H. 2
- Michler, N. (Nathaniel), 1827-1881 2
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Topic
- Northwest, Pacific 74
- River engineering 43
- United States. Congress--Records and correspondence 39
- Bodies of water 30
- Rivers 28
- Photography 22
- River surveys 15
- River channels 14
- Canals 12
- Nature 9
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Region
- Oregon >> United States 74
- Columbia River >> Douglas County >> Washington >> United States 45
- Washington >> United States 39
- Willamette River >> Multnomah County >> Oregon >> United States 28
- Snake River >> Franklin County >> Washington >> United States 17
- Columbia River >> Clatsop County >> Oregon >> United States 14
- Coos Bay >> Coos County >> Oregon >> United States 5
- Idaho >> United States 5
- Montana >> United States 3
- California >> United States 2
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Type
- Text 74
Format
- image/jpeg 49
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