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Creator
- United States. War Department 15
- Powell, Charles Francis, 1843-1907 5
- Wilson, John M. (John Moulder), 1837-1919 3
- Gillespie, G. L. 1
- Jones, William A. (William Albert), 1841-1914 1
Region
- Columbia River >> Douglas County >> Washington >> United States 15
- Oregon >> United States 14
- Willamette River >> Multnomah County >> Oregon >> United States 12
- Snake River >> Franklin County >> Washington >> United States 11
- Washington >> United States 11
- Coos Bay >> Coos County >> Oregon >> United States 6
- California >> United States 2
- Clearwater River >> Nez Perce County >> Idaho >> United States 2
- Idaho >> United States 2
- Yamhill River >> Yamhill County >> Oregon >> United States 2
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Institution
- University of Oregon 15