ACCOUNT OF AN EXPEDITION FROM PITTSBURGH TO THE ROCKY MOUNTAINS, PERFORMED IN THE YEARS 1819, 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. COMPILED FROM THE NOTES OF MAJOR LONG, MR. T. SAY, AND OTHER GENTLEMEN OF THE PARTY, BY EDWIN JAMES, BOTANIST AND GEOLOGIST TO THE EXPEDITION. IN THREE VOLUMES. VOL. I. LONDON: PRINTED FOR LONGMAN, HURST, REES, ORME, AND BROWN, PATERNOSTER-ROW. 1823. |