2003. Geological Survey (U.S.), American Geological Institute, and Geological Survey (U.S.). National Mapping Division. This datalayer is point coverage gazetteer representing populated places in the United States and its territories. It contains official names and l... American Geological Institute.
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2003. Smithsonian Institution. Global Volcanism Program, American Geological Institute, Geological Survey (U.S.), and Environmental Systems Research Institute (Redlands, Calif.). This datalayer is point coverage containing basic geographic and geologic information for worldwide volcanoes thought to have been active in the la... American Geological Institute.
2002. Environmental Systems Research Institute (Redlands, Calif.), Geological Survey (U.S), and American Geological Institute. This datalayer is a polygon coverage representing First-Order Administrative Areas worldwide (as they existed in 2002) and was originally produced ... American Geological Institute.
2000. Environmental Systems Research Institute (Redlands, Calif.), Geological Survey (U.S), and American Geological Institute. This datalayer is a point coverage representing cities worldwide and was produced by ESRI and published as part of the USGS Global GIS database. It... American Geological Institute.
2003. United States. National Geospatial-Intelligence Agency, Geological Survey (U.S.), Environmental Systems Research Institute (Redlands, Calif.), and American Geological Institute. This datalayer is a point coverage representing major cities worldwide based on information from the GNS (GEOnet Names Server). For global (non-U.S... American Geological Institute.