Digital Archaeological Record - tDAR is an international digital archive and repository that houses data about archaeological investigations, research, resources, and scholarship. tDAR provides researchers new avenues to discover and integrate information relevant to topics they are studying.
Open Context - Use Open Context to discover, reference, and publish primary data and documentation collected in archaeology and other field sciences by professional researchers.
Archaeology Data Service - The ADS supports research, learning and teaching with freely available, high quality and dependable digital resources. It does this by preserving digital data in the long term, and by promoting and disseminating a broad range of data in archaeology. The ADS promotes good practice in the use of digital data in archaeology, it provides technical advice to the research community, and supports the deployment of digital technologies.
ICPSR, the Inter-University Consortium for Political and Social Research is a non-profit, membership-based data archive located at the University of Michigan. The University of Minnesota - Twin Cities (UM-TC) membership allows students, staff, and faculty to access ICPSR data files and documentation for the purpose of academic research. The data available through ICPSR are raw, unanalyzed data which require statistical analysis. Individuals who are prepared to analyze raw data can download data themselves from the ICPSR web site. All other users should contact the Data Services Librarian for assistance. You can also deposit your data with ICPSR
Dataverse Network is a collection of social science research data contained in virtual data archives called "dataverses". Maintained by the IQSS (Institute for Quantitative Social Sciences at Harvard), you can create your own "dataverse" and upload your data, subject to certain terms
Social Sciences Data - Library finding aid
Guide to Social Science Data - at the University of Minnesota (pdf)