Creator
- United States. Bureau of Transportation Statistics11
- Hunt, Raquel2
- Institute for Water Resources (U.S.). Navigation Data Center2
- National Atlas of the United States2
- Blades, Doug1
- Firestine, Theresa1
- Geological Survey (U.S.)1
- Hudgins, Andrew1
- Jessberger, Steven1
- Lubkin, Samantha1
- Rawson, Peg1
- United States. Bureau of Transportation Statisticsf1
- United States. Federal Aviation Administration1
- United States. Federal Highway Administration1
- United States. Federal Transit Administration1
- Waterborne Commerce Statistics Center (U.S.)1