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Creator
- United States. War Department 22
- Powell, Charles Francis, 1843-1907 5
- Gillespie, G. L. 2
- Michler, N. (Nathaniel), 1827-1881 2
- Wilson, John M. (John Moulder), 1837-1919 2
- Doerksen, Harvey R. 1
- Jones, William A. (William Albert), 1841-1914 1
- United States. Army. Corps of Engineers 1
- United States. Army. Corps of Engineers. North Pacific Division 1
Topic
- Bodies of water 26
- Rivers 24
- River engineering 23
- United States. Congress--Records and correspondence 23
- River surveys 22
- River channels 21
- Northwest, Pacific 17
- Harbors 15
- Canals 12
- United States--Armed Forces--Organization--Charts, diagrams, etc 10
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Region
- Columbia River >> Douglas County >> Washington >> United States 26
- Snake River >> Franklin County >> Washington >> United States 26
- Oregon >> United States 25
- Washington >> United States 25
- Willamette River >> Multnomah County >> Oregon >> United States 24
- Coos Bay >> Coos County >> Oregon >> United States 13
- California >> United States 8
- Idaho >> United States 8
- Clearwater River >> Nez Perce County >> Idaho >> United States 6
- San Diego River >> San Diego County >> California >> United States 5
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Format
- application/pdf 26