Narrative of an expedition to the source of St. Peter's River, Lake Winnepeek, Lake of the Woods, &c. performed in the year 1823, by order of the Hon. J.C. Calhoun, secretary of war, under the command of Stephen H. Long, U.S.T.E. Compiled from the notes of Major Long, Messrs. Say, Keating, & Colhoun, by William H. Keating, A. M. &c. Professeur of Mineralogy and Chemistry, as applied to the Arts, in the University of Pennsylvania; Geologist and Historiographer to the Expedition. In two volumes. Vol. I[-II]