Sketch Showing the Progress of the Survey in Sections XIII and XIV. Reconnaissance and Triangulation in California, Nevada Utah, and Colorado

A gorgeous map of the western portion of the transcontinental triangulation. The maps shows northern California, Nevada, Utah, and Colorado. Many rivers, water bodies, places, base stations and triangulations are shown. A gap in the triangulation is shown from the continental divide to the Salt Lake area (the Green River watershed essentially).

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.