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- Canada Department of Mines and Resources, Mines and Geology Branch, Bureau of Geology and Topography13
- Canada Dept. of Mines and Resources, Mines and Geology Branch, Bureau of Geology and Topography3
- American Geographical Society of New York2
- Bureau of Geology and Topography, Mines and Geology Branch2
- U.S. Geological Survey2
- Bureau of Geology and Topography1
- Canada Bureau of Geology and Topography1
- New Hampshire State Planning and Development Commission and Highway Department1
- State of Illinois, Department of Registration and Education, Division of the State Geological Survey1
- State of Tennessee, Dept. of Conservation, Division of Geology1
- Tennessee Division of Geology1
- The Divisions1
