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- U.S. Geological Survey68
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- Ejército Argentino, Instituto Geográfico Militar12
- Army Map Service9
- Canada Department of Mines and Resources, Mines and Geology Branch, Bureau of Geology and Topography9
- Dept. of State, Division of Map Intelligence and Cartography/CAHSA9
- Instituto Geográfico e Cadastral8
- Canada Dept. of Mines and Resources, Mines and Geology Branch, Bureau of Geology and Topography6
- Geological Survey of Canada6
- The Survey5
- Ejército Argentino, Instituto Geográfico Militar4
- The Service4
- Army Map Service, U.S. Army3
- The Office3
- Canada, Dept. of Mines and Resources, Mines and Geology Branch, Bureau of Geology and Topography2
- Department of Mines and Resources, Mines and Geology Branch, Bureau of Geology and Topography, Geological Survey2
- L. Larmat2
- National Geographic Society2
- New York Times Company2
- The Society2
