Important farmlands, Obion County, Tennessee

"October 1977."
"Base source: USGS 1:100,000 county base map, dated 1975."
"Interpretations derived from soil map constructed 1973 by Cartographic Division, Soil Conservation Service, USDA, of Obion County, Tennessee."
Includes location map and col. inset showing southwestern portion of Obion County.
Available also through the Library of Congress Web site as a raster image.