YEAR PUBLISHED: 1864
Upper Sheet, U.S. Coast Survey A.D. Bache Superintendent Sketch A Showing the Progress of the Survey in Section No. 1 From 1852 to 1864
DESCRIPTION
A striking U.S. Coast Survey chart showing numerous soundings, aids and hazards to navigation, points, rocks, islands, lighthouses, bearings, and headings along with notes on tides and soundings. This chart shows significant triangulation data and detailed inlets, islands, harbors, and rocks.
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.
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.
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