Account of an expedition from Pittsburgh to the Rocky Mountains : performed in the years 1819 and '20, by order of the Hon. J.C. Calhoun, Sec'y of War ; under the command of Major Stephen H. Long : from the notes of Major Long, Mr. T. Say, and other gentlemen of the exploring party

Beinecke Rare Book and Manuscript Library > Account of an expedition from Pittsburgh to the Rocky Mountains : performed in the years 1819 and '20, by order of the Hon. J.C. Calhoun, Sec'y of War ; under the command of Major Stephen H. Long : from the notes of Major Long, Mr. T. Say, and other gentlemen of the exploring party