1904. 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.... The Bureau.
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1915. Grimes, E. J. (Earl Jerome),1893-cartographer. Relief shown by contours. Shows distribution of soil types by colors and symbols. In lower margin: A. Hoen & Co. Baltimore, Md. Scale approximately... The Bureau.
1905. Neill, N. P.(Nelson Prentice), cartographer. Shows soil types classification by colors and symbols.; Field Operations, Bureau of Soils, 1905.; Breuker & Kessler Co. Phila. Scale 1:63,360. 1 in... The Bureau.
1912. Hurst, Lewis A.(Lewis Alexander), 1874-cartographer. Shows soil types classification by colors and symbols.; Field Operations, Bureau of Soils, 1912.; A. Hoehn & Co. Lith. Baltimore, Md. Scale 1:63,36... The Bureau.
1914. Grimes, E. J. (Earl Jerome),1893-cartographer. and Stevens, E. H. (Edmund H.),1892-cartographer. Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Soils, 1914.' 'Snyder & Black, N.Y.' Scale 1:63,360. 1 inch = 1... The Bureau.
1915. Relief shown by contours.; Shows distribution of soil types by colors and symbols.; In lower margin: Engraved and published by the U.S. Geological ... The Bureau.
1915. Bushnell, T. M. (Thomas Mark),1889-1976 and Erni, C. P. (Chester Prall),1896-cartographer. Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Soils, 1915.' 'Snyder & Black, N.Y.' Scale 1:63,360. 1 inch = 1... The Bureau.
1927. Kunkel, D. R. (David Roy),1901-cartographer,surveyor. and Tharp, W. E. (William Edgar),cartographer,surveyor. Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Chemistry and Soils, 1927.' 'Litho Eastern Offset Inc., Balto.'... The Bureau.
1937. Ulrich, H. P. (Herbert Paul), 1904-cartographer. Shows soils types classification by colors and symbols.; Surveyed in 1937. Series 1937.; Lith. A. Hoen & Co., Inc. Scale 1:24,000; Polyconic projec... The Bureau.
1930. Bushnell, T. M. (Thomas Mark),1889-1976,surveyor., Hendrickson, B. H. (Bertram Higbie),1892-surveyor, Kunkel, D. R. (David Roy),1901-surveyor., and Ulrich, H. P. (Herbert Paul),1904-surveyor. Shows soil types classification by colors and symbols. 'Field Operations, Bureau of Chemistry and Soils, 1930.' 'Lith Eastern Offset Inc., Balto.' ... The Bureau.
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