"United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JPMP-QM5 : accessed 12 Feb 2013), Karen L Fonstad, 11 March 2005; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"united states social security death index," index, familysearch (https://familysearch.org/pal:/mm9.1.1/jpmp-qm5 : accessed 12 feb 2013), karen l fonstad, 11 march 2005; citing u.s. social security administration, death master file, database (alexandria, virginia: national technical information service, ongoing).