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https://www.noaa.gov/media/digital-library-photo/pl23cgs06498jpg

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No. 30 Diagram B. showing the Changes in the Bottom of New York Harbor in theVicinity of the Middle Ground Shoal From a comparison of surveys made in1855 and 1872. Annual Report 1871.

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Historic Coast & Geodetic Survey
Historic Maps
United States Coast Survey Annual Report
Displaying 2008 of 8931