National Historical Geographic Information System

E1961401 UNEXPLORED

The National Historical Geographic Information System (NHGIS) is a project that provides free, standardized access to historical U.S. census and geographic data for research and analysis.

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All labels observed (1)

Label	Occurrences
National Historical Geographic Information System canonical	2

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

1940 United States census → aggregateDataAvailableFrom → National Historical Geographic Information System ⓘ

1980 United States census → summaryDataAvailableFrom → National Historical Geographic Information System ⓘ