- Alexander, J. M.1
- Alexander, W. D.1
- Andrew B. Graham Co.1
- Baldwin, E. D.1
- Beasley, T. D. (Thomas Dykes)1
- Blackburn, Laura1
- Brown, J. F.1
- Bush, Charles A.5
- Canada Centre for Mapping1
- Donn, John M., 1871-19311
- EROS Data Center4
- Emerson, J. S.1
- Gap Analysis Program (U.S.)1
- Geological Survey (U.S.)31
- Geological Survey (U.S.) Minerals Information Team9
- Geological Survey (U.S.). Water Resources Division. Wisconsin District1
- Godt, Jonathan W.1
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)1
- Kanakanui, S. M.1
- Lannoo, Michael J.1
