1980. United States. Soil Conservation Service. Shows land use.; "September 1980."; Includes vicinity map. 129 x 102 centimeters 1:50,000. The Service (Harrisburg, Pa.).
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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.?).