Chart of the head of navigation of the Potomac River : surveyed by order of the Sec. of War for the Corporation of Georgetown D.C. with a view to the improvement of the Georgetown Channel /

Relief shown by hachures. Depths shown by contours and soundings.
Oriented with north toward the upper left.
Includes note.
LC copy fold-lined, laminated, halved, and mounted on cloth backing.
Available also through the Library of Congress Web site as a raster image.
DCP