A scarce linen-backed map of North America and Canada which reads “A New and Correct Map of North America in which the Principal Places of Engagements during the Present War are accurately Inserted, London: Published as the Act directs. April 16th, 1780. by Richardson & Urquhart. Royal Exchange”. This is a Revolutionary War map in black and white, showing Canada and the American colonies westward to Louisiana and the Great Lakes three years before the end of the Revolutionary War. Substantial topographical details are shown, including the locations of forts, towns, rivers, mines, land grants, borders between the colonies, and areas occupied by native North American tribes; it also includes the five Great Lakes as they were known at the time. The location "Walker 1750" is marked in what is now southern Kentucky, the location of the royal grant of land to the "Loyal Land Company" founded by the explorer Thomas Walker, and the whole map would be reissued in 1783 to show "The Rebel Colonies Now The United States of America”. Richardson & Urquhart were booksellers in London between 1765 and 1784. They were located at Cornhill, a street and ward in the center of London’s financial district. The map measures 15 1/2 x 11 1/4 in. wide, with some light paper loss along the left fold - it is hidden by the linen backing - and there is light soiling near the top left corner of the map, and overall a very informative map about the American colonies during the Revolutionary War.