History of the expedition under the command of captains Lewis and Clarke to the sources of the Missouri Thence across the Rocky Mountains and down the river Columbia to the Pacific Ocean, performed during the years 1804-6 by order of the governement of the U. S. A complete rper. of the Biddle ed. of 1814 to which all the members of the expedition contributed. With an account of the Louisiana purchase by John Bach Mc. Master and notes upon the route. With ill. and maps - Lewis, Meriwether 1774-1809; Clark, William (Allerton Book, 1922)