Texas Birth Index, 1903-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VD4L-TN5 : accessed 22 December 2015), James Fredrick Mayfield in entry for John Robert Mayfield, 07 Dec 1953; from "Texas Birth Index, 1903-1997," database and images, Ancestry (http://www.ancestry.com : 2005); citing Texas Department of State Health Services.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V9NL-3XQ : 20 May 2014), John Mayfield, Jun 1983; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
Texas Death Index, 1964-1998," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JVF6-H6R : accessed 22 December 2015), John Robert Mayfield, Harris, Texas, United States; citing Department of State Health Services, Austin.
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