Creator
- (creation): U.S. Geological Survey1
- (selection/conversion): Bernardin, Lochmueller and Associates1
- Circuit Rider Productions1
- Cornell Institute for Resource Information Sciences (Cornell IRIS)1
- FrobozzCo International1
- GIS Lab, Newman Library, Baruch CUNY1
- Illinois State Geological Survey1
- Indiana Geological Survey1
- Maryland iMap1
- Metropolitan Council1
- NYS Department of Agriculture and Markets1
- New York State Department of Energy Conservation Bureau of Air Quality Surveillance1
- US Census Bureau, Geography Division1
- Uganda Bureau of Statistics1
- United States. National Oceanic and Atmospheric Administration1