bn:03791446n
Noun Named Entity
Categories: Geographic data and information in the United States, United States history stubs, Historical geographic information systems, Demographics of the United States, Demographic history of the United States
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National Historical Geographic Information System  NHGIS
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The National Historical Geographic Information System is a historical GIS project to create and freely disseminate a database incorporating all available aggregate census information for the United States between 1790 and 2010. Wikipedia
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EN
The National Historical Geographic Information System is a historical GIS project to create and freely disseminate a database incorporating all available aggregate census information for the United States between 1790 and 2010. Wikipedia