U. S. CORPS OF TOPOGRAPHICAL ENGINEERS

  Report Intended to Illustrate A Map of the Hydrographical Basin of the Upper Mississippi River. 

J. N. Nicollet, Esq.

U.S. Congress, Senate, 26th Cong., 2d Session., 1841. Senate Doc 237.

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The document was digitized by Google from the original at Oxford University

Hydrographical Basin

 of the 

Upper Mississippi River 

From Astronomical and Barometrical Observations, Surveys, and Information.

 By J. N. Nicollet.

 in the years 1836, 37, 38, 39, and 40; assisted in
 1838, 39 & 40, by Lieut. J. C. Fremont, of the Corps of
 Topographical Engineers 
under the superintendence of the Bureau of the Corps of Topographical Engineers
 and authorized by
 The War Department.

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This map was digitized by the Library of Congress.

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U S Corps of Topographical Engineers
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