July 1863. Relief shown by hachures. Depths shown by isolines. This item is in the Map Collection of the Library of Virginia; please contact the Library's Archives Research Services department for more information. Available also through the Library of Congress web site as raster image. Mar. 2002; D.H. Newhall, 1926, c; Map Cataloging Team.
Territorio raffigurato: Atlantic States; United States; Pennsylvania; Maryland; Atlantic States; Virginia; Maryland; Pennsylvania; Virginia.