- Geological Survey (U.S.)15
- Environmental Systems Research Institute (Redlands, Calif.)12
- National Atlas of the United States10
- Arndt, Raymond E.2
- Bawiec, Walter J.2
- Beikman, Helen M.2
- King, Philip B.2
- Schruben, Paul G.2
- Blackburn, Laura1
- International Association of Seismology and Physics of the Earth's Interior1
- International Heat Flow Commission1
- Lannoo, Michael J.1
- Nanjappa, Priya1
- Oklahoma State University. Department of Geography. Cartography Service1
- Patuxent Wildlife Research Center1
- Schultz, Kenneth A.1
- Stackhouse, Cecil1
- United States Geological Survey1
- United States. Bureau of Transportation Statistics1
- United States. Department of Housing and Urban Development1
