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Creator
- United States. War Department 160
- Powell, Charles Francis, 1843-1907 5
- United States. Army. Office of the Chief of Engineers 5
- Wilson, John M. (John Moulder), 1837-1919 3
- Michler, N. (Nathaniel), 1827-1881 2
- Gillespie, G. L. 1
- Jones, William A. (William Albert), 1841-1914 1
- United States. Department of the Interior 1
Topic
- United States. Congress--Records and correspondence 167
- River engineering 137
- Northwest, Pacific 132
- River surveys 40
- Harbors 31
- Bodies of water 29
- Rivers 29
- Rapids 23
- Bridges--Design and construction 22
- River channels 22
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Region
- Willamette River >> Multnomah County >> Oregon >> United States 92
- Columbia River >> Douglas County >> Washington >> United States 77
- Oregon >> United States 51
- Washington >> United States 50
- Snake River >> Franklin County >> Washington >> United States 28
- Coos Bay >> Coos County >> Oregon >> United States 13
- California >> United States 11
- Columbia River >> Clatsop County >> Oregon >> United States 9
- Portland >> Clackamas County >> Oregon >> United States 9
- Idaho >> United States 7
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Format
- image/jpeg 138
- application/pdf 29
Institution
- University of Oregon 167