This well engraved map is an early example of Young's notable map. This edition has county development limited to the extreme southern and eastern portions of the territory that shows the map to be circa 1851. The large region in west is labeled Pembina, while the large southern area is Dakotah. Settlement is almost exclusively along the Mississippi River. Locates many Indian tribes including the Assiniboine, Yanktonan, Chippeway, Mennomonees, Winebagoes, etc. Forts along the Missouri River include Aux Cedres, Lookout, Pierre Choteau, Clarke, and Mandan (noted as the wintering place of Lewis and Clarke in 1804-05). Fancy titling and decorative borders. A detailed and interesting map that documents the early stages of development of Minnesota and the Dakotas.

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Condition: B+

Original color with light offsetting at left and minor toning along the sheet's edges. There are short edge tears in the margins, including one entering 0.5" into the border at top that has been closed on verso with archival tape.