1980. United States. Soil Conservation Service. Base compiled from USGS 1:24 000-scale topographic maps dated 1968-1975, map edited 1978, revised from aerial photographs taken 1975; interpretatio... Dept. of Agriculture, Soil Conservation Service (Washington.).
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1977. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated 1976; interpretations derived from soil map constructed 1968.; "Projection and 10,000-metre grid ... Dept. of Agriculture, Soil Conservation Service (Washington.).
1979. United States. Soil Conservation Service. Base compiled in 1976 from USGS 1:24,000-scale topographic maps dated 1954-1973, revised from aerial photographs taken 1975; interpretations derive... Dept. of Agriculture, Soil Conservation Service (Washington.).
1979. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated 1978.; "Projection and 10,000-meter grid ticks, zone 14: Universal Transverse Mercator. 25,000-fo... Dept. of Agriculture, Soil Conservation Service (Washington.).
1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base compiled in 1977; interpretations derived from soil map constructed 1974.; "Projection and 10,000-metre gri... Dept. of Agriculture, Soil Conservation Service (Washington.).
1978. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated in 1976; interpretations derived from soil map constructed 1960.; "Projection and 10,000-metre gr... Dept. of Agriculture, Soil Conservation Service (Washington.).
1983. United States. Soil Conservation Service. Shows land use.; Includes vicinity map.; "November 1979 base 4-R-37325." 45 x 58 centimeters approximately 1:100,000. USDA-SCS (Fort Worth, Tex.).
1977. United States. Soil Conservation Service. Universal Transverse Mercator projection; 1927 North American datum.; May 1977.; Indexed. 92 x 66 centimeters 1:50,000. Dept. of Agriculture, Soil Conservation Service (Washington.).
1980. United States. Soil Conservation Service. Base source: USGS 1:100,000 county base map dated 1978; interpretations derived from soil map constructed 1972.; "Projection and 10,000-metre grid ... Dept. of Agriculture, Soil Conservation Service (Washington.).
1980. United States. Soil Conservation Service. "Interpretations derived from soil map constructed 1967."; May 1980.; Includes location map. 46 x 44 centimeters 1:100,000. Dept. of Agriculture, Soil Conservation Service (Washington.).