Reply #41: There are a number of different ssdi databases

[Ferry Fey]

the ssdi only lists someone if they were collecting social security

There is no the SSDI database.

The SSDI databases (plural) available online are commercially available ones. We cannot tap into the definitive federal SSDI database, which at any rate is does not include the full range of US citizen deaths. They can differ somewhat in their contents, some are not as up-to-date as the others, and all must be considered to be incomplete snapshots.

Any reference to such SSDI databases that we have available online should always cite the source of the listing (which I don't think has been done yet by any 9/11 researcher). I don't know that anyone working on SSDI correllations has indicated awareness that womens' social security records might be listed under maiden names or married names rather than the name commonly used in 9/11 lists. Nor is there indication of whether the person might have dependents collecting their SS and thus not be listed. The questions that have been raised about SSDI lists of those on the planes vs those on the ground might be suggestive, but their documentation is too vague.

As far as marriage records go, I've just checked a database of New Jersey marriage records, and my marriage information is not listed. So don't treat such listings as gospel either.