Creator
- Brock & Weymouth Inc.52
- United States Engineer Office26
- United States. Army. Corps of Engineers26
- Geological Survey (U.S.)11
- National Atlas of the United States6
- EROS Data Center3
- Canada Centre for Mapping1
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)1
- USGS National Center for EROS1
- United States. Forest Service1