- Collett, John, 1828-1899, cartographer2
- Cox, Dennis P.2
- Daniel, Thomas W.2
- Fischer, Emil B.2
- Fischer, Emil B., cartographer2
- Fletcher, Hugh, 1848-19092
- Froelich, A. J. (Albert Joseph), 1929-2
- Froiseth, B. A. M., 1839-1922, cartographer2
- Geological Survey (Namibia)2
- Geological Survey of Pennsylvania2
- Glaser, John D.2
- Heddle, Matthew Forster, 1828-1897, cartographer2
- Lemmon, Robert E.2
- Lindgren, Waldemar, 1860-19392
- Mardirosian, Charles A.2
- Mardirosian, Charles A., cartographer2
- Maryland Geological Survey2
- Merschat, Carl E.2
- Moore, Richard T.2
- Neale, E. R. W.2
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