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Author
- Digital Social Science Center (DSSC), Columbia University Libraries127
- Geographical Survey Institute48
- International Steering Committee for Global Mapping (ISCGM)44
- Brion de la Tour, Louis21
- Geological Survey (U.S.)9
- United States. Central Intelligence Agency.9
- Survey Department7
- Schley, Jacob van der6
- United States. Army Map Service.5
- Australian Surveying and Land Information Group (AUSLIG)4
- National Geographical Institute4
- National Institut of Cartography and Remote Sensing (INCT)4
- Royal Jordanian Geographic Centere (RJGC)4
- State Authority for Geodetic Works (SAGW)4
- Sudan National Survey Authority4
- Survey Department of Sri Lanka4
- Survey of Kenya4
- Surveys and Mapping, Ministry Lands and Housing4
- U. S. Geological Survey EROS Data Center4
- U.S. Geological Survey (USGS), EROS Data Center4