Observations on the Geology and Mineralogy of the Region embracing the Sources of the Mississippi River, and the Great Lake Basins, during the Expedition of 1820. Illustrated with Geological Profiles, and Numerous Diagrams and Views of Scenery. By Henry R. Schoolcraft, U. S. Geol. and Minera. Exp.
To the Hon. John C. Calhoun, Secretary of War.
Washington, April 2, 1822.
Sir: I have the honor, herewith, to submit the general report of my observations on the geology and mineralogy of the region visited by the recent expedition to the sources of the Mississippi River. I transmitted to the Department on the 6th of November, 1820, a report on the existence of Copper Mines in the Basin of Lake Superior, together with specimens of the native metal, which were politely taken charge of at Albany by General Stephen Van Rensselaer, M. C. Will it be consistent with the views of the Department to print these reports?
I have the honor to be, sir,
Very respectfully,
Your obedient servant,
HENRY R. SCHOOLCRAFT.
REPLY.
War Department, April 6, 1822.
Sir: I have received your interesting report on the geology and mineralogy of that section of the western country embraced by the late expedition of Gov. Cass; and, although I have not had it in my power, as yet, to peruse it with attention, I will see you, at any time you please, on the subject of your letter respecting it.
I am, sir,
Respectfully,
Your obedient servant,
J. C. CALHOUN.
Mr. Henry R. Schoolcraft.