(click here, or on image, to open CMU's ArcGIS site in a new window!)
Welcome to CMU Library's GIS Resource Guide.
Links to GIS data resources are organized by geographic region and by agency, with an emphasis on Colorado and federal government sites. These websites provide GIS data downloads, often free of charge.
A great resource for all thing GIS in Colorado is the GIS Colorado website: http://giscolorado.org/. GIS Colorado is a non-profit organization represented by members of the GIS community throughout Colorado.
GIS.Com (provided by ESRI)
What is GIS? (from the U.S. Geological Survey)