This report describes the second of G.W. Featherstonhaugh's extensive geological reconnaissances into the Midwest which, together with the first report, comprised the first Federal geological survey. Although much preliminary matter is presented, original descriptions and discussion of the geologic structure and stratigraphy over the terrain covered is also included. Octavo, 168 pages with two large folding maps, A Reconnoissance of the Minnay Sotor Watapah or St. Peter's River to its Sources (41.7 x 23.2") and A Map of a Portion of the Indian Country Lying East and West of the Mississippi River... (40 x 27.5"), which is joined on two sheets. The latter map is considered to be among the best maps of the upper Mississippi River published prior to Nicollet's landmark map of 1843. The map shows the locations of various forts and Indian villages, lands ceded to the United States from various Indian tribes, the Half Breed Tract in southern Iowa, Carver's Grant, and the town of Commerce, Illinois, which would be purchased by the Mormons a few years later and renamed Nauvoo. Printed by Gales and Seaton. The disbound maps and report are housed in an attractive blue clamshell case.

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Condition: B+

The disbound maps are generally clean and bright. The map of Indian Country has only light toning along the joint (A), and the map of the St. Peter's River has scattered foxing, several tiny splits at fold intersections, and a narrow right margin (B). Disbound text is bright with occasional light foxing.