Mangum, A. W.,cartographer,surveyor. and Neill, N. P. (Nelson Prentice),cartographer,surveyor.
Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Soils, 1904. 'Andrew B. Graham Co. Lithographers Washington DC.' Scale 1:63,360. 1 inch = 1 mile. U.S. Dept of Agriculture, Bureau of Soils, soils surveyed by A.W. Mangum and N.P. Neill.