A 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 /
Scale ca. 1:4,400,000.
Relief shown by hachures.
Meridian: London and Washington.
Available also through the Library of Congress Web site as a raster image.
Lewis, Samuel, 1753 or 1754-1822.
Clark, William, 1770-1838.
Neele & Son.
Library of Congress