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Union forts on Maryland shore
[Contours of Union forts on the north side of the Potomac, 1862] :
Shows the names and configurations of Union fortifications on the Maryland side of the Potomac River in 1862, and in some cases the name of the regiment that built the structure. This appears to be a companion piece to the image on p. 43.
Sneden, Robert Knox
Real estate map of the Metropolitan Branch of the Baltimore and Ohio Railroad Company between Washington, D.C., and Rockville, Md., and adjacent land holdings : from latest official authorities & actual surveys
Shows drainage, park lands, streets, roads, railroads, some buildings, and names of property owners. Includes railroad profile.
Fava Naeff & Co. - Fava, Francis R., Jr. - Baltimore and Ohio Railroad Company
Directional commuting, census tract-level approach, Washington-Baltimore and vicinity
Covers the region including (at the extremes) York County (Pa.), Queen Anne's County (Md.), Caroline County (Va.), and Warren County (Va.). "County and equivalent area boundaries and place names are as of January 1, 1990." Computer-generated map. Available also through the Library of Congress Web site as a raster image. DCP
United States. Bureau of the Census. Geography Division