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Publisher
- U.S. Geological Survey44
- Geological Survey of Canada24
- Canada Dept. of Mines and Resources, Mines and Geology Branch, Bureau of Geology and Topography16
- American Geographical Society of New York12
- The Survey10
- The Office8
- The Bureau7
- The Service7
- Hydrographic Office5
- publisher not identified5
- Talleres de Fotozincografía4
- s.n.4
- Generalstab des Heeres, Abteilung für Kriegskarten u. Vermessungswesen3
- The Administration3
- U.S. Forest Service3
- "Geographia" Map Co.2
- C.S. Hammond2
- Geographia Map Co.2
- Geological Survey2
- George Philip and Son2
