Copperplate engraving, four sheets 8 joined two by two totaling mm 1020x1170, hand-painted period; monumental 4-sheet map of North America, issued shortly after the conclusion of the American Revolution. It was originally published by Bowen & Gibson in 1755 and then periodically updated after the conclusion of the French and Indian War and the American Revolution. Beginning in 1775, it was included in some of the most influential American atlases of the time, including those published by Jefferys, Faden and Sayer & Bennett. Beginning in the late 1770s the map was updated to include surveys compiled by Governor George Pownall, which included information from Evans and other indigenous sources. The map includes an insert of Hudson Bay and an insert based on the map of Fra. Eusebio Kino to the mouth of the Colorado River. The name “United States” appears on the portion of North America assigned by the 1783 treaty, and a four-line note on the Labrador coast and Article III of the treaty appears in the upper right. The map features an elegant title cartouche with Indians and is filled with names of Indian localities to the west, forts along the Mississippi and west of the Appalachians, and annotations on early roads, exploration, and other specific geographical facts. Very good copy albeit with slight offset of the engraving.