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 ; in two vols. - with an atlas

Enth. in vol. 2: Astronomical and meteorological records, and vocabularies of Indian languages, taken on the Expedition for Exploring Mississippi and its Western Waters : under the command of Major S. H. Long, of the United States' topographical engineers, in 1819 and 1820