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.
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<a href="https://en.wikipedia.org/wiki/United_States_Coast_Survey" class="extiw" title="en:United States Coast Survey">United States Coast Survey</a></div>
1857<div style="display: none;">date QS:P571,+1857-00-00T00:00:00Z/9</div>
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