Relief shown by hachures. Prime meridians: Washington and Greenwich. From: 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. London : G.B. Whittaker, 1825.
