• 3 Wisconsin Historical Society Archives
• 2 Map Library (Robinson)
• 1 Steenbock Library

• 14 Books

• 25 Classification
• 14 Soil surveys
• 2 Landowners
• 2 Real property
• 1 Age
• 1 Agricultural resources
• 1 J1

• 25 United States. Bureau of Soils
• 12 Purdue University. Agricultural Experiment Station
• 11 A. Hoen & Co
• 10 Indiana. Department of Geology and Natural Resources
• 9 Tharp, W. E. (William Edgar)
• 7 Ulrich, H. P. (Herbert Paul), 1904-
• 5 Jones, Grove B., 1877-
• 5 Julius Bien & Co
• 5 Neill, N. P. (Nelson Prentice)
• 5 Rogers, O. C. (Oliver Curtis), 1902-
• 5 United States. Bureau of Plant Industry, Soils, and Agricultural Engineering
• 4 Grimes, E. J. (Earl Jerome), 1893-
• 4 Hurst, Lewis A. (Lewis Alexander), 1874-
• 4 United States. Agricultural Research Administration
• 3 United States. Soil Conservation Service
• 2 Bennett, Frank
• 2 Burke, R. T. Avon (Richard Thomas Avon), 1878-
• 2 Bushnell, T. M. (Thomas Mark), 1889-1976
• 2 Ely, Charles W
• 2 Hesler, R. S
• 2 Mangum, A. W
• 2 Purdue University. Cooperative Extension Service
• 2 Quinn, E. J. (Edward J.)
• 2 Rockford Map Publishers
• 2 Ruhlen, La Mott

• 46 English

• 3 Newton County
• 2 Allen County
• 2 Allen County (Ind.)
• 2 Elkhart County
• 2 Elkhart County (Ind.)
• 2 Madison County
• 2 Madison County (Ind.)
• 2 Marshall County
• 2 Marshall County (Ind.)
• 2 Montgomery County
• 2 Montgomery County (Ind.)
• 2 Newton County (Ind.)
• 1 Adams County
• 1 Adams County (Ind.)
• 1 Bartholomew County
• 1 Boone County
• 1 Boone County (Ind.)
• 1 Boonville Region
• 1 Boonville Region (Ind.)
• 1 Brown County
• 1 Clinton County
• 1 Clinton County (Ind.)
• 1 Delaware County
• 1 Delaware County (Ind.)

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