San Francisco Bay to N. boundary of California.
From San Francisco Bay to the Northern Boundary of California from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War by Lieut. R.S. Williamson, U.S. Topl. Engrs. and Lieut. H.L. Abbot, U.S. Topl. Engrs., H.C. Fillebrown, J. Young and C.D. Anderson, Assts. 1855. Explorations and surveys for a railroad route from the Mississippi River to the Pacific Ocean. War Department. Routes in Oregon and California. Map No. 1. Drawn by John Young.
David RumseyWilliamson, R.S.
1861
1861
A.O.P. Nicholson I-XI
1:760 320