Whitson, A. R. (Andrew Robeson), 1870-19456 mi. to 1 in. (W 92°52ʹ--W 86°45ʹ/N 47°07ʹ--N 44°30ʹ). "Based on the work of the Soils and Geological Divisions of the Wisconsin Geological and Natural History Survey in cooperation with the College of Agriculture and the Bureau of Soils of the United States Department of Agriculture, which has been published in previous maps and reports."75 x 125 centimetersJPEGUMN_ALMA:9917200040001701engWisconsin Geological and Natural History Survey (Madison)PublicGeneral map of the soils of Northern WisconsinMapsWisconsin1918University of Minnesota