Creator
- Kelso, Nathaniel Vaughn2
- Patterson, Tom2
- Environmental Systems Research Institute (Redlands, Calif.)1
- Firestine, Theresa1
- Geological Survey (U.S.)1
- National Atlas of the United States1
- San Joaquin County (Calif.). Community Development Department1
- United States. Bureau of Transportation Statistics1
- United States. Federal Aviation Administration1