1983. United States. Soil Conservation Service. Shows land use.; "February 1983."; Includes location map.; "Sheet 2 of 2." 112 x 91 centimeters Scale 1:50,000. The Service (Harrisburg, Pa.).
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1982. United States. Soil Conservation Service. "Interpretations derived from soil survey sheets completed 1979 by Soil Conservation Service, USDA, of Valley County, Montana."; "August 1982 BASE ... The Service (Fort Worth, Tex.).
1980. United States. Soil Conservation Service. "Base map compiled in 1980 by Soil Conservation Service ... from USGS 1:24 000 scale topographic maps dated 1953-1963".; "Interpretations derived f... Geological Survey (Washington, D.C.?).
1916. Pennsylvania. Bureau of Topographic and Geologic Survey. "Richard R. Hice, State Geologist."; Contour interval 100 feet.; Originally published as part of Oil and gas map of southwestern Pennsylvania, 1915... The Survey (Pennsylvania).
1795. Ellicott, Andrew, 1754-1820. Photostats of original manuscript map done approximately 1795 located in the Pennsylvania State Archives.; Includes legend.; Alternate title: A cor...
1869. Sheafer, P. W. (Peter Wenrick), 1819-. Shows railroads and canals, coal and oil regions and locations of steel works, foundries etc. from Lake Ontario through much of West Virginia; most... Jacob Haehnlen [lithographer (Philadelphia, [Pennsylvania).
1929. Pennsylvania. Public Service Commission. Insets: Pittsburgh and vicinity. Scale 1:190 080 ; Philadelphia and vicinity. Scale 1:190 080.; Includes color-keyed index to steam railroads and i... The Commission (Harrisburg, Pa).
1927. Pittsburgh (Pa.). Department of City Planning. Blueline print.; "Mapped June 1927."; Relief shown by contour lines.; "Geodetic & Topographic Survey."; Also indicates some building and lot owners... Dept. of City Planning (Pittsburgh, Pa).
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