

The SSDI, taken from the U.S. Social Security Administration's Death Master File, is one of the key resources available to genealogists today. It contains those individuals who were assigned Social Security numbers and whose death was reported to the SSA.
National Technical Infomation Service, the distributor of these data, notes: "SSA authorizes the use of this database as an identity verification tool, but notes that the Death Master File (DMF) may contain inaccuracies. Thus, SSA cannot guarantee the accuracy of the DMF. Therefore, the absence of a particular person on this file is not proof that the individual is alive. Further, in rare instances it is possible for the records of a person who is not deceased to be included erroneously in the DMF."
Note: Data is current through February, 2009. Access to the SSDI is FREE to all who visit NewEnglandAncestors.org. This database contains the names of 84,208,107 individuals, most of whose deaths were recorded after 1965.
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