Incoming Resources
- National Geographic Society, Washington, c2011
- Smithsonian Associates, Washington, ©1970-
- National Geographic Society, Washington, c1975
- National Wildlife Federation, Washington, 1974
- National Geographic Society, Washington, 1962
- National Geographic Society, Washington, 1975-2002
- The Society, Washington, c1976
- U.S. Govt. Print. Off., Washington, 1974
- The Committee, Washington, 1946
- National Geographic Society, Washington, 1973
- National Geographic Society, Washington, 1967
- Island Press, Washington, 2022