Account of an Expedition from Pittsburgh to the Rocky Mountains; Performed in the Years 1819 and 1820 by Order of the Hon. J.C. Calhoun, Secretary of War, Under the Command of Maj. S.H. Long, of the U.S. Top. Engineers Volume 2
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Account of an Expedition from Pittsburgh to the Rocky Mountains; Performed in the Years 1819 and 1820 by Order of the Hon. J.C. Calhoun, Secretary of War, Under the Command of Maj. S.H. Long, of the U.S. Top. Engineers Volume 2
