Author
- United States. Bureau of Transportation Statistics4
- unknown4
- Bureau of Transportation Statistics3
- City of Cambridge GIS3
- ESRI3
- General Drafting Company.3
- Hunt, Raquel3
- LeadDog Consulting (Firm)3
- National Imagery and Mapping Agency.3
- Sacramento County GIS3
- Sistemas de Información Geográfica, S.A. de C.V.3
- Tele Atlas B.V.3
- Tobin International3
- USGS3
- Boston Street Railway Association.2
- Environmental Resources Research Institute2
- Farmer, John, 1798-1859.,Silas Farmer & Co.2
- Geological Survey (U.S.)2
- Indiana Department of Transportation, Business Information and Technology Systems, GIS Mapping2
- Kelso, Nathaniel Vaughn2