Nicollet, J. N. (Joseph Nicolas), 1786-1843

J.N. Nicollet, French mathematician and explorer, settled in the United States in 1832. In 1836-1837 he explored the sources of the Mississippi River, and in 1838-1839 he led two United States Army Corps of Topographical Engineers expeditions to map the region between the Mississippi and Missouri Rivers, in which he was assisted by John Charles Frémont. John James Abert served as commander of the Topographical Bureau and Corps of Topographical Engineers, 1829-1861.

From the description of J.N. Nicollet letters received from John James Abert and John Charles Frémont, 1838-1841. (Unknown). WorldCat record id: 82426794

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