Social Survey Archives and Directories:

The Center on Policy Attitudes. Washington DC.
Data and Program Library Service. University of Wisconsin, Madison.
Data on the Net. University of California, San Diego.
European Public Opinion. The European Union.
Gallup Organization. Princeton NJ.
Geostat. University of Virginia, Charlottesville VA.
Howard W. Odum Institute. University of North Carolina, Chapel Hill.
The Institute for Social Research.University of Michigan, Ann Arbor MI.
The National Network of State Polls. University of North Carolina, Chapel Hill.
National Opinion Research Center. University of Chicago.
Nielsen Media Research. New York.
Penn World Tables. University of Toronto.
Social Science Data Archives. Council of European Social Science Data Archives.
Sociosite. University of Amsterdam, Netherlands.
PollingReport. George Washington University, Washington DC.
The Pulse. Economic Policy Institute, Washington DC.
The Roper Center. University of Connecticut, Storrs CT.