Ada Poortstra, "United States Social Security Death Index"
given name: Ada middle name: surname: Poortstra name suffix: birth date: 6 October 1877 social security number: 180-40-0537 state: Pennsylvania last place of residence: Monroe, Pennsylvania previous residence postal code: 18301 event date: 15 May 1968 age: 91 Citing this Record
"United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/J23G-224 : accessed 28 Feb 2013), Ada Poortstra, 15 May 1968.