Type | Valeur |
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Titre | Walter Webb, "United States Social Security Death Index" |
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"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:J58H-56N : 11 January 2021), Walter Webb, Mar 1968; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing). |