Creator
- Advocate-Republican1
- Anderson Publishing Company2
- Andreas, A. T. (Alfred Theodore), 1839-19001
- Arndt, Raymond E.10
- Bawiec, Walter J.10
- Beikman, Helen M.10
- Blackburn, Laura1
- Canada Centre for Mapping1
- EROS Data Center3
- Eastern Energy Resource Surveys Team (Geological Survey)1
- Gap Analysis Program (U.S.)3
- Geological Survey (U.S.)33
- Geological Survey (U.S.) Minerals Information Team9
- Geological Survey (U.S.). Water Resources Division. Wisconsin District1
- Godt, Jonathan W.3
- Harrison & Warner.1
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)1
- Iowa Publishing Co.1
- Iowa State University. Library1
- King, Philip B.10