The library purchases subscriptions to data archives and commercial products providing data across the disciplines.
The Inter-university Consortium for Political and Social Research maintains the world's largest archive of computerized, numeric social science data. Topics covered include demography, economics, health care, politics, social behavior, public opinion.
Variable level searching for some studies is available under Data > Browse > Social Science Variables Database
The Roper Center for Public Opinion Research is one of the world's leading archives of social science data, specializing in data from surveys of public opinion. The data held by the Roper Center range from the 1930s, when survey research was in its infancy, to the present. Most of the data are from the United States, but over 50 nations are represented.