A. bis (Upper Sheet) Sketch A Showing the progress of the Survey in Section
No. 1 from 1852 to 1868. Dated 1869. Annual Report 1869.
Image ID: cgs06418, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
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of the U.S. Department of Commerce, National Oceanic & Atmospheric
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June 10, 2016