comprehensive road network file; roads, streets, etc.
CENSUS
Posted:
Posted:
comprehensive road network file; roads, streets, etc.
Posted:
from their web page: "The National Historical Geographic Information System (NHGIS) is a project to create and freely disseminate a database incorporating all available aggregate census information for the United States between 1790 and 2015." Free… Read more.
Posted:
comprehensive road network file; roads, streets, etc.