Keywords: 1857 U.S.C.S. Map of San Francisco Bay - Geographicus - SanFrancisco-uscs-1857.jpg A rare nautical triangulation chart of the California coast from Pt Sal to Tomales Bay including the San Francisco Bay area by the U S Coast Survey 1857 Depicts the much of the shoreline of southern California with numerous notations regarding the various ports and sailing references Produced in 1857 under the Supervision of A D Bache the most influential leader of the Coast Survey Dated 1857 Size in 24 5 19 5 object history credit line accession number SanFrancisco-uscs-1857 Geographicus-source PD-art United States Coast Survey maps Maps of the San Francisco Bay Area 1857 maps |