Another oa-discipline based repository established in 1962(!) at Univ of Mich.
Membership is needed to get at ALL the datasets. Member list at http://www.icpsr.umich.edu/membership/ors.html.
Libraries cannot be members, only institutions. Info at http://webapp.icpsr.umich.edu/cocoon/ICPSR-FAQ/0051.xml and this about the complete online access to datasets (http://webapp.icpsr.umich.edu/cocoon/ICPSR-FAQ/0104.xml).
It's in the adi, under criminal justice and criminology, statistics and sociology.
ICPSR (University of Michigan Institute for Social Research) The Inter-university Consortium for Political and Social Research (ICPSR) maintains and provides access to an archive of social science data for research and instruction, and offers training in quantitative methods to facilitate effective data use. Some datasets are available to the public.