Creator
- United States. Bureau of Transportation Statistics38
- National Atlas of the United States29
- Geological Survey (U.S.)23
- Stackhouse, Cecil17
- National Geophysical Data Center8
- Environmental Systems Research Institute (Redlands, Calif.)7
- United States. Bureau of the Census. Geography Division7
- Bush, Charles A.5
- Reed, John Calvin, Jr. 1930-5
- Waterborne Commerce Statistics Center (U.S.)3
- Gap Analysis Program (U.S.)2
- Hijmans, Robert J.2
- Rawson, Peg2
- U.S. Census Bureau. Geography Division2
- United States. Federal Aviation Administration2
- United States. Federal Highway Administration2
- United States. Federal Transit Administration2
- Vanderbilt Engineering Center for Transportation Operations and Research2
- Canada Centre for Mapping1
- Geological Survey (U.S.). Water Resources Division. Wisconsin District1