Improved Form of Sub Current Apparatus Devised for use of the Coast Survey
by H. Mitchell, Asst. 1859. Figure No. 40. An Improved Form of Pile for
Securing Structures in the Sea Devised for the use of the Coast Survey by H.
Mitchell, Asst. 1859.
Image ID: cgs05640, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Category: Historical Cartography/
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