Relief shown by hachures. Prime meridian: Washington. Insets: Baltimore -- Steamboat routes. "Entered according to Act of Congress in the year 1846 by H.N. Burroughs, in the Eastern District of Pennsylvania." In lower right margin: 15.
Mitchell, Samuel Augustus, 1792-1868
H. N Burroughs
University of Minnesota Libraries, John R. Borchert Map Library.