Annual Report 1864. No. 1 Sketch A Showing the Primary Triangulation in Section I and the Connection of the Baselines in Sections I and II from 1844 to 1864
Image ID: cgs06262, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Photo Date: 1864 Credit: United States Coast Survey Annual Report 1864 • High Resolution Photo Available
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