Creator
- Ocean Tipping Points Project43
- Geological Survey (U.S.)31
- National Atlas of the United States31
- National Geophysical Data Center10
- Geological Survey (U.S.) Minerals Information Team9
- Bush, Charles A.5
- Reed, John Calvin, Jr. 1930-5
- EROS Data Center4
- U.S. Census Bureau. Geography Division3
- Rumsey, David, 1944-2
- United States. Forest Service2
- Wade, Tim2
- Alexander, J. M.1
- Alexander, W. D.1
- Andrew B. Graham Co.1
- Baldwin, E. D.1
- Beasley, T. D. (Thomas Dykes)1
- Blackburn, Laura1
- Brown, J. F.1
- Canada Centre for Mapping1