Scarce and important map issued to accompany Schoolcraft and Allen's Expedition to Northwest Indians, HR Doc. 323, 23rd Congress, 1st Session. The map covers the region of present-day Minnesota from the western tip of Lake Superior to the Red River. It depicts Ft. Snelling, scores of Sioux villages, American Fur Company trading posts, and many other details. Henry Schoolcraft led the expedition into the upper Mississippi valley to attempt a reconciliation between the Sioux and Chippewa, and to vaccinate the Chippewa Indians.