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MapChart 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 ... 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
- Contributor: Callahan, Denis - United States. Army. Corps of Topographical Engineers - Burgess, R. W. - Woodruff, I. C. - United States. Congress Senate
- Date: 1857-01-01