United States Coast Survey
Estados Unidos. Office of Coast Survey

United States Coast Survey
Estados Unidos. Office of Coast Survey

WWW LC AUTH.,23/1/2004

Tamalpais shett, 1897

WWW. NOAA, 23/4/2004

(...triangulation by U.S. Coast and Geodetic Survey)

(1807, Survey of the Coast established by President Thomas Jefferson; 1836, Survey of the Coast renamed to U.S. Coast Survey; 1878, U.S. Coast Survey name changed to Coast an Geodetic Survey to reflect role of geodesy)

(U.S. Coast and Geodetic Survey)