Creator
- Liu, Zhi1
- National Geophysical and Solar-Terrestrial Data Center1
- Oklahoma State University. Department of Geography. Cartography Service1
- Popple, Henry1
- Pownall, Thomas1
- Ritters, Kurt1
- USGS National Center for EROS1
- United States. Bureau of Customs and Border Protection1
- United States. Bureau of Transportation Statistics1
- United States. Department of Commerce1