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Author
- Geological Survey (U.S.)17
- National Atlas of the United States12
- EROS Data Center7
- Rumsey, David, 1944-4
- Hart Energy Publishing3
- Center for Spatial and Textual Analysis2
- Wade, Tim2
- Carey, Mathew, 1760-18391
- Churchman, Joseph and James1
- Colton, J. H. (Joseph Hutchins), 1800-18931
- Moore, I.W.1
- Ritters, Kurt1
- Ross, Lieut.1
- Scott, Bradford1
- Stanford University. Center for Spatial and Textual Analysis1
- USGS National Center for EROS1
- United States. Forest Service1