Preliminary Chart of Entrance to San Francisco Bay California

A very highly detailed chart of the Entrance to San Francisco Bay, California. This chart shows incredible inland and coastal detail. Extensive topographical features are shown by hachures and shading, roads, town and city layouts, buildings, forts, presidios, rivers, properties/farms, lakes, ponds, valleys, ridges, wharves, railroads, etc. Extensive depth soundings, isolines, and shading show coastal detail and bathymetry. Bottom conditions, aids, and dangers to the mariner, points, rocks, and lighthouses are shown to aid the mariner. Extensive sailing directions, tidal information, lighthouse details, dangers, notes, and remarks to the mariner are given. The details of the City of San Francisco are very clearly shown. Other places and locations shown are Point Lobos, Fort Point, Mission de Dolores, Mission Bay, Point San Quentin, Point Avisadera, San Leandro Bay, Alameda, The Encenal, Brooklyn, Oakland, Point Potrero, Point Richmond, Red Rock, California City Point, Richardson's Bay, Saucelito Point, Saucelito, Diablo Point, Point Bonita, Ballenas Bay, Angel Island, Alcatraz Island, and Yerba Buena Island.

IMPORTANT NOTE:

All of our United States Coast Survey (USCS), United States Coast & Geodetic Survey (USC&GS), and similar maps and charts have been professionally unfolded and flattened using humidity baths, semi-permeable membrane, and drying blotter techniques. Most others you typically see on eBay have not been, and worse, are quickly and crudely unfolded for the low-quality photos you see. Unfolding these maps in that way is damaging and weakens them. Please be aware.