1964. Hollingsworth, John McHenry, 1823-1889 and Kingsbury, Robert C. Includes ancillary computer generated isopleth map Wheat as a percent of all cropland, 1964. Detached from: Kingsbury, Robert C. Atlas of Indiana, ... Department of Geography, Indiana University.
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1963. Hollingsworth, John McHenry, 1823-1889 and Kingsbury, Robert C. Detached from: Kingsbury, Robert C. Atlas of Indiana, page 46. Scale approximately 1:2,700,000. Department of Geography, Indiana University.