1922. Relief shown by contours.; Shows distribution of soil types by colors and symbols.; In lower margin: Williams & Heintz Co. Washington D.C.; Base ma... The Bureau.
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1922. Tharp, W. E.(William Edgar), cartographer. Shows soil types classification by colors and symbols.; Relief shown by contours and hachures.; Soils surveyed by W.E. Tharp, Earl D. Fowler, L.S. ... The Bureau.
1922. Jones, Grove B., 1877- cartographer. Shows soil types classification by colors and symbols.; Relief shown by contours and hachures.; Soils surveyed by Grove B. Jones, C.B. Manifold, T.... The Bureau.
1922. Tharp, W. E.(William Edgar), cartographer. Shows soil types classification by colors and symbols.; Soils surveyed by W.E. Tharp, of the U.S. Department of Agriculture, in charge, and T.M. Bu... The Bureau.