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Author/Creator
- National Geographic Society (U.S.)25
- Joint Commission (Washington, D.C.)2
- National Geographical Society of India2
- Geological Survey (U.S.)1
- Geological Survey (U.S.). National Mapping Division1
- Jay I. Kislak Collection (Library of Congress)1
- National Geographic Society (U.S.). Projects1
- National Geographical Association of Malaysia1
- Robert S. Peabody Foundation for Archaeology1
- Sisson, Edward B.1
- United States. Bureau of Transportation Statistics1
- Washington Academy of Sciences (Washington, D.C.)1