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Fascinating map of North America, showing the details as known to Lewis & Clark on the eve of their expedition to the Pacific Ocean.
The map was published shortly after the Louisiana Purchase, but prior to the Adams-Onis Treaty (1819) established a boundary between the US and Mexico (then New Spain) and the Treaty of 1818 began to differentiate between British America and the United States west of Lake Superior.
On either side of the Rocky Mountains, a number of speculative rivers appear, with teasingly easy passes through the mountains, mostly unnamed and all essentially unknown. Further north, many trading houses of the Hudson's Bay Company and Northwest Company are shown.
Little is actually known about the region which would become Upper California and the Pacific Northwest, with only coastal features and Mt. Hood shown south of the Columbia River.
The map also pre-dates the Anglo-American movement towards the settlement of Texas.
Dozens of Native American tribal lands are shown. The configuration of Alask (Russian Settlements) is still relatively speculative and thinly known, although an very optimistic Northwest Passage is suggested.
![(North America) ФИЗИЧЕСКАЯ КАРТА СEВЕРНОЙ АМЕРИКИ. [Physical Map of North America]](https://storage.googleapis.com/raremaps/img/small/90262.jpg)
![L'Amerique Septentrionale divisee en ses principaux Etats…1762 [Sea of the West]](https://storage.googleapis.com/raremaps/img/small/98745.jpg)
![[Pan American Menu Map] North America](https://storage.googleapis.com/raremaps/img/small/103976.jpg)