Smith, Dwight A. Columbia River Highway Historic District. Salem: Environmental Section, Technical Services Branch, Oregon State Highway Division, Oregon Department of Transportation, 1984. Hadlow, Robert W. Historic Columbia River Highway Recording Project. Historic American Engineering Record, HABS/HAER Division, National Park Service, U.S. Dept. of the Interior, 1994. Lancaster, Samuel C. The Columbia: American's Great Highway through the Cascade Mountains to the Sea. Third Edition. Portland: J.K. Gill Company, 1926. 
Introduction
| Prohibition
| McLoughlin
| Prison
| Expositions
| Copperfield
| Environment |