This is a very nice map of the Americas. Extreme nothern portion of North America remains unchartered.   The United States includes a very large Missouri Territory and Western Territory, which extends into today's British Columbia.  Texas and California are still part of Mexico.  In South America a large Columbia is shown, including today's Venezuela and Ecuador, and a large Bolivia while Patagonia is not yet part of Argentina.  Plenty of details are offered as to topography, rivers, lakes and settlements.  From A New General Atlas of the World.  Teesdale maps are increasingly scarce.