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Author/Creator
- United States. National Park Service[remove]69
- Geological Survey (U.S.)26
- Library of Congress4
- Brown, Sharon A.3
- Greene, Jerome A.3
- Historic American Buildings Survey3
- United States. Forest Service3
- Unrau, Harlan D.3
- Brabets, Timothy P.2
- Brugge, David M.2
- Chaco Center. Division of Chaco Research2
- Frazier, C. Craig2
- Geological Survey of Wyoming2
- Glancy, Patrick A.2
- Good, John M. (John Maxwell), 1924-2
- Gray, Karen M.2
- Harmsen, Lynn2
- Historic American Buildings Survey/Historic American Engineering Record2
- Kurjack, Dennis C.2
- Lampe, David C.2