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Creator
- Oregon. State Highway Division 70
- Oregon State Highway Commission 54
- Skelley, E. A. 33
- Oregon. Department of Transportation 10
- Henderson, Robert W. (Robert Wesley), 1914-2006 9
- University of Oregon. Department of Geography 7
- Oregon Transportation Commission 6
- Weister Company 6
- Kilger, L. A. 3
- OSC News Bureau Photo 2
- Oregon Journal (Firm) 2
- Powell, Dan 2
- Shull, Jim 2
- Finley, Irene 1
- Finley, William L. (William Lovell), 1876-1953 1
- Oregon Roadside Council 1
- Oregon State Motor Association 1
- Oregon State University. Department of Geography 1
- Oregon. State Highway Department 1
- Oregon. Tourist and Information Bureau 1