The following links direct you to subject-specific GIS resources in Richardson Library and available on the internet.
Inter-university Consortium for Political and Social Research
Data.gov a repository of user, institutional, an government generated data
UNEP (United Nations Environmental Programme) manages numerous high quality geospatial data sets at various scales (global, continental, national and subnational) on a variety of environment related themes.
Natural Earth Natural Earth is a public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales. Featuring tightly integrated vector and raster data, with Natural Earth you can make a variety of visually pleasing, well-crafted maps with cartography or GIS software.