Sketch Showing the Progress of the Survey in Section I. Southern Part, with Lake Champlain

Triangulation chart showing the progress of the survey and a highly detailed coast along with some inland hydrographic features and mountain peaks. Massachusetts, Rhode Island, New Hampshire, Maine, Nantucket, Marthas Vineyard, Cape Code, Boston, Portland, Maine, Narragansett Bay, Monhegan Island and Tennants Harbor to Campobello Island. Inset sub-sketches of Davis, Cultivator, and Georges Shoals are shown. A nice inset of the triangulations around Lake Champlain is in the upper right corner. A legend describing elements of the chart is included.

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.