Author
- California. Metropolitan Transportation Commission3
- County of San Mateo Information Services Department3
- FHWA3
- U.S. Geological Survey3
- World Wildlife Fund3
- Arizona NEMO2
- California. Air Resources Board. Planning and Technical Support Division2
- Federal Highway Administration2
- Federal Highway Administration (FHWA)2
- Federal Transit Administration (FTA)2
- Geographical Survey Institute2
- International Association of Seismology and Physics of the Earth's Interior2
- International Heat Flow Commission2
- Juniata County2
- Oklahoma State University. Department of Geography. Cartography Service2
- PA Department of Conservation and Natural Resources2
- Pennsylvania Bureau of Topographic and Geologic Survey, Dept. of Conservation and Natural Resources2
- Rails-to-Trails Conservancy2
- Solano County GIS2
- Stackhouse, Cecil2