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- Geological Survey (U.S.)138
- Instituto Geográfico e Cadastral (Portugal)8
- United States. Forest Service. Pacific Northwest Region7
- United States. Army Map Service3
- United States. Forest Service. Southern Region, cartographer, publisher3
- Geological Survey (South Africa)2
- Geological Survey (U.S.), cartographer2
- Geological Survey (U.S.), cartographer, issuing body2
- Geological Survey (U.S.), cartographer, publisher2
- Hammond, Edwin Hughes, 1919-2
- Ontario. Department of Mines, issuing body2
- United States. Forest Service. Northern Region2
- Barkóczy, F., cartographer1
- Biely, Anton, cartographer1
- Canada. Service topographique de l'armée, Auteur1
- Davies, J. F.1
- Fuller, Dale L.1
- Geological Survey (U.S.), issuing body1
- Instituto Geográfico Nacional (Guatemala)1
- Instituto Geológico y Minero de España1
