Tagged: Geography

database
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 2000. Census Tract Shapefiles are available for select areas for the 1940 – 1990 census.The NHGIS consists of three major ...
database
The Office of Coast Survey’s Historical Map & Chart Collection contains over 20,000 maps and charts from the late 1700s to present day.The Collection includes some of the nation’s earliest nautical charts, hydrographic surveys, topographic surveys, geodetic surveys, city plans and Civil War battle maps. ...
database
The National Atlas data is now archived as 1997-2014 Edition of The National Atlas of the United States on the U.S. government’s www.data.gov website. The USGS continues to make at least a subset of the National Atlas data available under its National Map Small Scale Collection. ...
database
LandScan is a global population database that shows geographical distribution of population at one-kilometer resolution over an average 24-hour period. The LandScan algorithm uses spatial data and imagery analysis technologies and the most up-to-date census data within an administrative boundary. These population distribution models are tailored to match the data ...