The databases included in this document have been supported entirely or in part by NIA. It is grouped by current archival status: (1) data sets archived at the Inter-University Consortium for Political and Social Research Data Archive (ICPSR), available on CD, or through the Internet; (2) data sets expected to be archived in the future, but currently available through principal investigator (PI); (3) data sets not expected to be archived, but available through the PI; and (4) data sets expected to be archived, but currently unavailable.