National Historical Geographic Information System (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "National Historical Geographic Information System" in English language version.

refsWebsite

Global rank English rank

1,266^th place

860^th place

low place

low place

nhgis.org

GIS boundary file availability https://www.nhgis.org/user-resources/data-availability#boundary-files

umn.edu

hist.umn.edu

Catherine Fitch and Steven Ruggles, “Building the National Historical Geographic Information System.” Historical Methods 46(2003): 41-51