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- Geological Survey (U.S.)65
- Geological Survey of Canada12
- Instituto Geográfico e Cadastral (Portugal)6
- Chishitsu Chōsajo (Japan)2
- United States. Army Map Service2
- Agnew, Allen F., 1918-20121
- Geological Survey (U.S.), issuing body1
- Illinois State Geological Survey. Educational Extension Division1
- Maxson, John H.1
- New Mexico Geological Society1
- Overbey, W. K. (William K.), author1
- Petsch, Bruno C. (Bruno Carl), 1901-19811
- Steece, Fred V.1
- United States. Bureau of the Census, cartographer, issuing body1
- Vermont. State Geologist1
