GIS: Other Suggested Resources

August 2, 2010

Atlas of Historical County Boundaries

"Presents in maps and text complete data about the creation and all subsequent changes (dated to the day) in the size, shape, and location of every county in the fifty United States and the District of Columbia." Available as interactive maps and shapefiles that can be downloaded for use with GIS software.

January 22, 2009

Center for International Earth Science Information Network

A center within Columbia University's Earth Institute, CIESIN provides an extensive gateway to data and other information focusing on human interactions in the environment.  Provides a topic search as well as subject access to spatial and tabular data sets held by CIESIN or hosted on its web site. 

August 15, 2008

EnviroMapper

From the EPA, map various types of environmental information, including air releases, drinking water, toxic releases, hazardous wastes, water discharge permits and Superfund sites. See also TOXMAP, from the National Library of Medicine.

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