Creator
- Environmental Systems Research Institute (Redlands, Calif.)7
- Geological Survey (U.S.)5
- Institute for Water Resources (U.S.). Navigation Data Center1
- Kelso, Nathaniel Vaughn1
- National Atlas of the United States1
- Patterson, Tom1
- U.S. Census Bureau. Geography Division1
- United States Geological Survey1
- United States. Bureau of Transportation Statistics1
- United States. Department of Housing and Urban Development1