Tracing from the Reconnaisance of the Western Coast (Southern Sheet), showing lines of soundings to determine the 500 fathom curve. Run by the Hydrographic party on board the U.S.C.S Stmt Hassler, under the command of Comdr P.C. Johnson U.S.N. Assist C.S.

Image ID: cgs05341, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: California
Photo Date: 1874
Credit: NARA C&GS Colllection

Category: Coast and Geodetic Survey/Archive/

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