Fine example of Buache's map of America, recently updates and improved to remove the sea of the west, based upon the discoveries of Cook and Russian explorers.

This map gives extraordinary treatment to the region, although there is curiously no mention of the Russian discoveries of Behring and Tchirikow. The mythical discoveries of Martin D'Augilar and Juan De Fuca are no longer shown, and the potential watercourse from the Bay of the West to the Michinipi River and then on the the Atlantic is now gone, although the names of the two explorers remain.

A fine depiction of the changing cartographic knowledge of North America at the time of the American Revolution.