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Scarce map of the United States, extending west to the Missouri River Valley, published in London by Teesdale.

The map shows a double wide Arkansas Territory, half of which would become Indian Territory.

Illinois is still pushed well west of its actual location, with Chicago appearing in Indiana.

The Missouri Valley (Missouri Territory) is filled with Indian names.

The Columbian Fur Company Establishment is shown (a reference to the Columbia Fur Company). When the Hudson's Bay Company merged with the old North West Company in 1821, nine hundred employees were left without work. This group formed the Columbia Fur Company, operating between the upper Mississippi and the upper Missouri Rivers.

In the summer of 1827, John Jacob Astor bought out the Columbia Fur Company and reorganized it as the Upper Missouri Outfit, centered at the Mandan villages on the northern Missouri River. Kenneth McKenzie was put in charge, and he immediately established Fort Floyd at the mouth of the Yellowstone River. Soon renamed Fort Union, it was one of the greatest American posts in the region. The combination of the Upper Missouri Outfit and the Western Department gave Astor near total control of the Missouri River fur trade.