Reconnaissance from San Diego to Panama. Plan of San Martin Island, by Lieut.
HB.Mansfield U.S.N. Astronomical Station Lat. 30.28'52"00 N. Lon. 116.06'36"90 W
. determined by W.Eimbeck. Sub Assist. C.S.
Image ID: cgs05337, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Location: California, San Martin Island Photo Date: 1873 Credit: NARA C&GS Colllection