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- Geological Survey (U.S.)8
- National Atlas & Thematic Mapping Organisation (India)3
- O.R.S.T.O.M. (Agency : France)2
- United States. Bureau of Soils2
- United States. Soil Conservation Service2
- Bryant, Bruce, 1930-1
- Darnley, A. G.1
- Deane, R. E.1
- Easterbrook, Don J., 1935-1
- Geological Survey of Canada1
- Gott, Garland Bayard, 1912-1
- Gould, William A.1
- Harper, Roland M. (Roland McMillan), 1878-19661
- Indonesia. Badan Kordinasi Survey dan Pemetaan Nasional1
- Institut des sciences agronomiques du Burundi, issuing body1
- Instituto Geográfico "Agustín Codazzi". Subdirección Agrológica1
- Jenkins, Olaf P. (Olaf Pitt), 1889-1983, cartographer1
- Kenya Soil Survey1
- Love, J. D. (John David), 1913-20021
- Maryland Geological Survey1
