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- Geological Survey (U.S.)64
- United States. Bureau of Land Management, cartographer42
- Geological Survey (South Africa)15
- United States. Bureau of Land Management14
- Ontario. Department of Mines8
- De Lacy, W. W. (Walter Washington), 1819-1892, cartographer7
- Barlow, Scott6
- Ontario. Geological Branch4
- Geological Survey (U.S.), cartographer3
- Geological Survey of Canada3
- Geological Survey of Canada, issuing body3
- Gray, A. B. (Andrew Belcher), 1820-1862, cartographer3
- Hibbard, J.3
- Nordkalott Project3
- Robert, J. A.3
- Baker & Harper, cartographer2
- Collett, John, 1828-1899, cartographer2
- Fletcher, Hugh, 1848-19092
- Froiseth, B. A. M., 1839-1922, cartographer2
- Geological Survey of India2
