James's _Account_ is the only narrative of the expedition, and his connection with the party gives his work the authority of an official report. Moreover, he not only had access to the notes of his associates, but received much personal assistance, especially from Long and Say. The original edition was published at Philadelphia in 1823, by Carey and Lea; it consisted of two volumes of 503 and 442 pages respectively, containing James's narrative, with appendices giving a catalogue of animals observed at Engineer Cantonment, the Indian sign language, Indian speeches at the councils held by Major O'Fallon, astronomical and meteorological records, and vocabularies of Indian languages, especially those of the Oto, Kansa, Omaha, Sioux, Minitaree, and Pawnee tribes. Extracts from Major Long's report to the secretary of war, dated January 20, 1821, and from the report made by his assistants to Long on the mineralogy and geology of the region explored, were incorporated in the second volume. A third volume contained the maps and plates, and the edition was provided with a brief index and "Preliminary Notice." The same year another edition was published in London, by Longman, Hurst, Rees, Orme, & Brown. This edition, the one selected by us for reprinting, was in three volumes, and contained the text essentially as printed in the Philadelphia edition.[8] In the arrangement of notes, however, a different plan was adopted; in the Philadelphia issue, all annotation was given at the foot of the appropriate pages, while in the London edition the notes for each volume were grouped in the back of the book. In the present reprint the former plan is followed. The Preliminary Notice found in the Philadelphia edition was omitted from the London version, but is supplied in the present reprint. The appendices giving astronomical and meteorological data and Indian vocabularies, which were omitted from the London edition, are also included in our reprint. Finally, instead of the atlas which accompanied the Philadelphia edition, selected illustrations, including a map of the region explored, were incorporated with the text in the various volumes of the London print.