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Author/Creator
- Geological Survey (U.S.)12
- United States. National Park Service[remove]12
- Brock, John C.8
- United States. National Aeronautics and Space Administration8
- United States. National Oceanic and Atmospheric Administration2
- Wahrhaftig, Clyde, 1919-19942
- Colman, Steven M.1
- Cyr, Andrew J.1
- Harden, Deborah Reid1
- McCracken, Reba G.1
- Nagle, David B.1
- Nolan, K. Michael (Kenneth Michael), 1949-1
- Sasnett, Peri1
- Stock, Greg M., 1973-1