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.).
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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.).
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.).
1979. United States. Soil Conservation Service. "Soil interpretive map of important farmlands."; "Base edited by the Geological Survey; compiled from USGS 1:24,000-scale topographic maps dated 19... Dept. of Agriculture, Soil Conservation Service (Fort Worth, Tex.).
1979. United States. Soil Conservation Service. Includes location map. Scale 1:50,000.
1979. United States. Soil Conservation Service. Includes location map. Scale 1:50,000.
1979. United States. Soil Conservation Service. "Source: Family of maps SCS drwg. no. 5,S-36,179 (2-77) and information from SCS field personnel."; "Lambert conformal conic projection."; "5,R-37,... Dept. of Agriculture, Soil Conservation Service (Washington.).
1979. United States. Soil Conservation Service. Includes notes and location map. Scale 1:50,000.
1979. United States. Soil Conservation Service. Shows land use.; "June 1979." 66 x 51 centimeters. The Service (Washington, D.C.?).
1979. United States. Soil Conservation Service. "Base map prepared by SCS, WTSC Carto Unit from AMS 1:250,000 series."; Sheet 1 has text on verso.; Includes location map. 88 x 52 centimeters; 87 ... Dept. of Agriculture, Soil Conservation Service (Fort Collins, Colo.).