"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JT7Y-W26 : 11 January 2021), Agatha D Holcomb, 26 Jun 1999; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"Texas Death Index, 1903-2000," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VZXS-8P1 : 24 May 2014), Agatha Dolores Holcomb, 26 Jun 1999; from "Texas, Death Index, 1903-2000," database, Ancestry (http://www.ancestry.com : 2006); citing certificate number , Dallas, Texas, Texas Department of Health, State Vital Statistics Unit, Austin.
Find a Grave, database and images (https://www.findagrave.com/memorial/117593986/agatha-d-holcomb: accessed 04 January 2024), memorial page for Agatha D Holcomb (7 Jun 1915–26 Jun 1999), Find A Grave: Memorial #117593986, citing Restland Memorial Park, Dallas, Dallas County, Texas, USA; Maintained by Jennifer Williams (contributor 47810583).