From the northern boundary of California to the Columbia River : from explorations and surveys
Relief shown by hachures. At head of title: Routes in Oregon and California. Map no. 2. "Drawn by John Young." From U.S. War Department, Explorations and Surveys for a Railroad Route from the Mississippi River to the Pacific Ocean. Topographical Maps... to Illustrate the Various Reports... (Washington, 1859) Description derived from published bibliography. Scale 1:760,320. LC Railroad maps, 170 Available also through the Library of Congress Web site as a raster image.