Potomac River (in four sheets), Sheet No. 1 From Entrance to Piney Point Featured The map shows the coast

The map shows the coast and bays from Point Sal to Tomales Bay including San Francisco Bay

Each of the 24 etchings signed and named in the plate: H

Mountain-Girded

then via a canal to Schuykill River finally reaching Norris Town just outside of Philadelphia

Massachusetts by John Wilson and Son

Potomac River (in four sheets), Sheet No. 1 From Entrance to Piney Point Featured The map shows the coastA striking nautical chart showing the section of the Potomac River from the entrance to Piney Point. This is sheet 1 of a 4 sheet set of the Potomac River. The chart shows bathymetry, aids and hazards to navigation, points, inlents, rivers, islands, terrestrial vegetation, farmlands, places, bays and harbors, and bearings. Also shown are information on soundings, bottom types, light houses, light vessels, tides, and sailing directions. IMPORTANT NOTE: