Depths are shown in feet and indicate low water with tides to 22 feet in the area. "Surveyed by the Officers of the U.S.S. Narragansett, Comdr. George Dewey, Comdg. March 1875." "No. 800." Vignettes: View from anchorage off Black Beacon. The Sonora Coast... Prime meridian: GM. Relief: hachures. Graphic Scale: Miles. Projection: Plane. Printing Process: Lithography. Other Features: Vignettes. Verso Text: MS note: 208869.
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