1846. Mitchell, S. Augustus (Samuel Augustus), 1792-1868. Relief shown by hachures. Prime meridian: Washington. Insets: Baltimore -- Steamboat routes. "Entered according to Act of Congress in the year 1... S.A. Mitchell (Philadelphia).
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1900. Mason, Charles, 1728-1786. Shows the northern part of the Mason and Dixon line.; Originally published with: A plan of the west line, or parallel of latitude, which is the bou... Maryland Historical Society (Baltimore, Md).
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).
1939. Maryland. Conservation Department. Includes pictorial index to fish and game species. 51 x 93 cm Scale not given. General Map Collection. Maryland. Conservation Department.
1979. United States. Soil Conservation Service. Base source: USGS 1:24,000-scale topographic maps compiled 1948-1957; interpretations derived from soil map constructed 1973.; "Projection and 10,0... Dept. of Agriculture, Soil Conservation Service (Washington.).
1924. Maryland Geological Survey. Shows the topography and election districts of Allegany County, Maryland. Waterways and man-made features such as roads, railroads, bridges, and bu... Maryland Geological Survey (Baltimoré).
1927. University of Maryland, College Park. 47 x 81 cm. Scale 1:500,000. 1 inch = 8 miles General Map Collection. Maryland. State Department of Forestry.
1917. Maryland Geological Survey. Copyrighted by Maryland Geological Survey, 1910.; "Based on surveys made in cooperation with the United States Geological Survey."; Insets: Elkton ... Maryland Geological Survey (Baltimore, Md.?).
1925. Maryland Geological Survey. Relief shown by contours. 66 x 91 centimeters Scale 1:62,500 General Map Collection. A. Hoen & Co (Baltimore).
1925. National Geographic Society (U.S.). Map Department. Relief shown by gradient tints and hachures.; Includes 3 inset maps.; Inset maps: Washington and vicinity -- Baltimore and vicinity --Wilmington an... National Geographic Society (Washington, D.C).