Waller-Joos-Stetzler
"United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JYYM-QM5 : accessed 11 Feb 2014), David Joos, February 1985; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
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Title "United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JYYM-QM5 : accessed 11 Feb 2014), David Joos, February 1985; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing). Short Title David Joos, "United States Social Security Death Index" Source ID S270 Linked to (1) Joos, David Emil Sr