1938. Ulrich, H. P. (Herbert Paul), 1904-cartographer. Shows soil types classification by colors and symbols.; Surveyed in 1938. Series 1938. Scale 1:31,680. 2 inches = 1 mile; Polyconic projection. The Bureau.
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1930. Buckhannan, W. H.(William Henry), 1901-cartographer. Shows soil types classification by colors and symbols.; Field Operations, Bureau of Chemistry and Soils.; Lith. A. Hoen & co., Inc. Scale 1:63,360.... The Bureau.
1932. Higbee, Howard William,surveyor., Miller, J. T. (John T.),1906-cartographer,surveyor., and Waggoner, M. E. (Morris Edward),surveyor. Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Chemistry and Soils.' 'Litho Eastern Offset Inc., Balto.' Scale... The Bureau.
1920. United States. Bureau of Public Roads. 1 map on 2 sheets. The Bureau.
1930. United States. Bureau of Public Roads. 1 map on 2 sheets. The Bureau.
1930. United States. Bureau of Public Roads. 1 map on 2 sheets. The Bureau.
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