Lewis, Samuel, 1753 or 4-1822.1 mapScale approximately 1:4,400,000.JPEGui:sheetmaps_4engLongman, Hurst, Rees, Orme & BrownPublicA map of Lewis and Clark's track across the western portion of North America, from the Mississippi to the Pacific Ocean: by order of the executive of the United States in 1804, 5 & 6, 1814Maps1810-1820University of Iowa