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Publisher
- Indiana University. Department of Geography72
- Indiana. Department of Geology and Natural Resources69
- Indiana. Geological Survey42
- Indiana. Department of Transportation15
- Rand McNally and Company13
- [publisher not identified]12
- Indiana. Legislative Bureau11
- H.M. Gousha Company9
- Geological Survey (U.S.)8
- Indiana. State Highway Commission (1961-1981). Division of Planning8
- Ed Leary & Associates6
- Indiana. Department of Conservation6
- Indiana. State Highway Commission (1961-1981)6
- Indiana University, Bloomington. Department of Geography5
- Indiana. Division of Geology5
- Indiana. State Highway Commission (1919-1953)5
- Indiana. State Planning Board5
- Mitchell, S. Augustus (Samuel Augustus), 1792-18685
- The Survey5
- C.S. Hammond & Company4