This highly detailed map depicts the territory of the region between the Red River and Lake Superior within present day Minnesota. The map is centered on the course of the Missisippi River above Lake Pipin, the Sioux Villages and the Falls of St. Anthony.
The map was a remarkable accomplishment, as Allen had only a compass which he placed before him in the canoe. With each change in direction of the river he made notes in his field book and by establishing a scale of proportions in the lengths of the reaches, "I was also in this way enabled to lay down and preserve the general curve of a river with surprising accuracy. On the portion of the river above Cass Lake which was the least known of any part of the river and route, I bestowed on tracing and computing of distance the most unremitted attention."
The region of present day Minnesota from the western tip of Lake Superior to the Red River is depicted, including Fort Snelling, countless Indian villages, tribal territories and trading posts. Allen reported having spoken with fur traders at every opportunity, obtaining information as to the state and nature of their trade, their relations with the British companies and the amount of business they did.
The map appeared in Henry Schoolcraft and James Allen's Journal of an Expedition into the Indian Country to the Source of the Mississippi, in 1832.

This map is in C+ condition. Separations have been repaired with archival material on the verso.

15.25 x 18.75 in