Pike, Zebulon Montgomery (1810): An Account of Expeditions to the Sources of the
Mississippi, and through the Western Parts of Louisiana, to the Sources of the Arkansaw, Kans, La
Platte, Pierre Jaun, Rivers; Performed by Order of the Government of the United States During the
Years 1805, 1806, and 1807. And a Tour through the Interior Parts of New Spain, when conducted
through theses Provinces, by ordre of the Captain-General, in the Year 1807, Philadelphia: C.
& A. Conrad , & Co.