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Description

Fine early map of North America, based upon Arrowsmith's map of the Interior Parts of North America, as expanded and revised in 1802.

Arrowsmith's map was a fine amalgam of the latest information from the Hudson's Bay Company and other early sources.

The most noteworthy feature of the map was the addition of a number of tentative tributaries of the Upper Missouri River, which offered possible water courses from the Rocky Mountains to the Mississippi.  While the present example is less enticing, it was the prospect of one of these tributaries representing either a continuous water course to the Pacific or a short portage across the mountains to another river leading to the Pacific which Lewis & Clark relied upon in choosing their course westward across the Rocky Mountains.

Condition Description
Right margin added