Limit your search
Creator
- United States. Army. Office of the Chief of Engineers 171
- United States. War Department 136
- Fisk, W. L. (Walter Leslie), 1855- 75
- Harts, W. W. (William Wright), 1866-1961 75
- Powell, Charles Francis, 1843-1907 5
- Wilson, John M. (John Moulder), 1837-1919 3
- Ballou, William Hosea, 1857-1937 2
- Michler, N. (Nathaniel), 1827-1881 2
- Willey, Day Allen 2
- Woehlke, Walter Victor, 1881-1954 2
- more »
Topic
- River engineering 326
- Northwest, Pacific 207
- United States. Congress--Records and correspondence 137
- West (U.S.) 118
- Bodies of water 109
- United States--Appropriations and expenditures 101
- River surveys 87
- Railroad engineering 48
- Rivers 41
- Harbors 31
- more »
Region
- Willamette River >> Multnomah County >> Oregon >> United States 189
- Columbia River >> Clatsop County >> Oregon >> United States 161
- Yamhill River >> Yamhill County >> Oregon >> United States 88
- Snake River >> British Columbia >> Canada 85
- Columbia River >> Douglas County >> Washington >> United States 80
- Cascade Locks >> Hood River County >> Oregon >> United States 77
- Oregon >> United States 71
- Washington >> United States 59
- Portland >> Clackamas County >> Oregon >> United States 41
- Snake River >> Franklin County >> Washington >> United States 28
- more »
Type
- Text 318
- Collection 7
- Image 1
Format
- image/jpeg 288
- application/pdf 30
- application/xml 7
- image/tiff 1
Institution
- University of Oregon 326