"Kentucky, Vital Record Indexes, 1911-1999," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QKCM-5T6G : 1 July 2015), Howell M Estes, 25 Oct 1991; citing Death, Mccracken, Kentucky, United States, Kentucky Department for Libraries and Archives, Frankfort.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JP14-1ZR : 20 May 2014), Howell Estes, 25 Oct 1991; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).