1862. Alexander, Samuel and United States. Army. Corps of Engineers. Relief shown by hachures. 1 map: mounted on cloth; 48 x 71 cm.
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1. This data layer contains points representing culverts located in water networks and marsh areas in Prince William County,VA. Culverts are structure...
2002. Drainage is a base map data layer derived by automated processes and processed for cartographic representation at 1:2400 scale. The line features ...
2004. This polygon represents drive way of Arlington County, VA 2004.
2010. This polygon layer represents the Paved Driveway located in Arlington County, VA 2010.
2004. This polygon represents easement area (property subdivision) in Arlington County, VA 2004.
1861. Subject: Map of eastern Virginia and Maryland, showing the roads, railroads and towns. Relief shown pictorially.; Not listed in Library of Congress... Published by Scho?nberg & Co., New York (New York).
1980. This polygon layer represents the election districts of Loudoun County, VA 1980.
1. This polygon layer represents the boundaries of the election districts of Loudoun county, VA 1990.
2008. This file contains every elementary school attendance zone for the Loudoun County Public School System (LCPS). These attendance zones are updated ...