. Summit Tunnel, eastern portal. Length 1,660 feet, on the western summit. Alternate Title: Central Pacific Railroad. Coverage: 1866?-1872?. Source Imprint: San Francisco : C. E. Watkins, 1866?-1872?. Digital item published 8-11-2006; updated 7-22-2008. 292 Summit Tunnel, eastern portal. Length 1,660 feet, on the western summit, by Watkins, Carleton E., 1829-1916

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Keywords: ., 1866?-1872?., coverage, francisco, imprint, san, source