%0 Generic %T Account of expedition from Pittsburgh to Rocky Mountains, performed in years 1819 and '20, by order of J. C. Calhoun, Secretary of War, under command of Major Stephen H. Long, from notes of Major Long, Mr. T. Say, and other gentlemen of exploring party; in 2 volumes, with atlas Vol. I. %U https://ezaccess.libraries.psu.edu/login?url=http://congressional.proquest.com/congressional/docview/t66.d71.w705-5