Covers Fairfax and Arlington counties and the city of Alexandria. "Field operations, Bureau of Soils, 1915." "Base map in part from U.S. Geological Survey sheets." Stephenson. Cartography of northern Virginia, pl. 103 Available also through the Library of Congress Web site as a raster image. DCP
Carter, William T. (William Thomas); Yingling, C. K.; United States. Bureau Of Soils; A. Hoen &amp; Co.; Geological Survey (U.S.); Carter, William T.
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/90680839/">https://www.loc.gov/item/90680839/</a>