| Who What Where When | REFINE  Browse All : Soils and National Atlas of Tennessee and Iowa from 1931 and 1936
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       Author Marbut, Curtis F. Full Title Soil Map of the United States by Curtis F. Marbut and Associates in the Soil Survery, U.S. Department of Agriculture, F.J. Marschner, Cartographer and Associate in Compilation. 1931. Soils, Plate 5, Section 7. Lith. A. Hoen & Co., Inc. Atlas of American Agriculture. Publisher U.S. Department of Agriculture 
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