Sketch D Showing the Progress of the Survey in Section No. IV From 1845 to 1855

Triangulation progress chart showing the coasts of Virginia and North Carolina. Bogue Sound, Bogue Inlet, Cape Henry, Virginia, Pamlico Sound, Cape Hatteras, Cape Fear. Major islands, rivers, and inlets, coastal cities are depicted as well as lighthouses, rivers, beaches and other sites identified. Albemarle Sound and Pamlico Sound are charted as well.

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.