General Map of Explorations and Surveys in California.

General Map of Explorations and Surveys in California made under the direction of the Hon. Jefferson Davis, Secretary of War by Lieut. R.S. Williamson, Topogl. Engr. assisted by Lieut. J.G. Parke, Topl. Engr. and Mr. Isaac Williams Smith, Civ. Engr. 1853. Explorations and Surveys for a Rail Road Route from the Mississippi River to the Pacific Ocean. War Department. Routes in California to connect with the routes near the 32nd and 35th parallels. Engr. by Selmar Siebert.

Williamson, R.S.

1861

1861

A.O.P. Nicholson I-XI

1:600 000

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