Imlay, Gilbert, Topographical Description of the Western Territory of America. London 1797.
James, Edwin. Account of an expedition from Pittsburg to the Rocky Mountains performed in the years 1819-1820, under command of Major Stephen H. Long. Philadelphia 1823. Reprinted in Thwaites' Early Western Travels, XIV-XVII.
Latrobe, Charles J. Rambler in North America 1832-1833. 2 vols. London 1835.
Michaux, Andre. Journal 1793-1796. (Englished from the original French, appearing in American Philosophical Society proceedings 1889. pp. 91-101, 114-140.) Reprinted in Thwaites' Early Western Travels, III.
Michaux, Francois A. Travels to the westward of the Alleghany Mountains in the States of the Ohio, Kentucky, and Tennessee, and return to Charleston, through the upper Carolinas in 1802. London 1805. Reprinted in Thwaites' Early Western Travels, III.
Mills, Samuel J., and Smith, Daniel. Report of a Missionary Tour through that part of the United States, which lies west of the Alleghany Mountains, performed under the direction of the Massachusetts Missionary Society. Andover 1815.
Niles, Weekly Register, I.-XL. Baltimore and Washington.
Notes from the Louisiana Courier, Louisiana Gasette, and the Louisiana Moniteur. I am indebted to Miss May Allinson for the use of these notes.
Nuttall, Thomas. Journal of travels into the Arkansas territory during the year 1819, with occasional observations on the manners of the aborigines. Philadelphia 1821. Reprinted in Thwaites' Early Western Travels, XIII.