Transportation map of Delaware, Maryland, and Virginia.
Scale ca. 1:1,457,280; 1 in. represents approx. 23 miles. Shows trackage rights, principal stations, distances between rail intersections, major U.S., Interstate, and State highways, and navigable waterways. Includes "Index to railroads." Available also through the Library of Congress Web site as a raster image. AACR2
Geological Survey (U.S.) - United States. Federal Railroad Administration. Office of Policy and Program Development