- [S1818] Katanning cemetery record
- [S1856] Iowa, Select Marriages Index, 1758-1996. Ancestry.com [database on-line]
- [S1863] Find A Grave; www.findagrave.com
- [S1864] Obituary of Donald Barrer, https://www.washingtonpost.com/archive/local/1989/09/16/donald-barrer-former-official-at-nsa-dies/2707c351-f495-42cc-9738-b5cc7ea48e1b/?utm_term=.492295b87213
- [S1865] Ireland Roman Catholic Parish Baptisms, findmypast.co.uk. [Database on-line]
- [S1866] U.S., Social Security Applications and Claims Index, 1936-2007. Ancestry.com [database on-line]
- [S1867] U.S., Social Security Death Index, 1935-2014. Ancestry.com [database on-line]
- [S1868] U.S. Naturalisation Record Indexes, 1791-1992. Ancestry.com [database on-line]
- [S1869] Private communication from Cynthia Smyth
- [S1870] England & Wales, Civil Registration Death Index, 1916-2007. Ancestry.com [database on-line]
- [S1882] National Burial Index for England & Wales Transcription, findmypast.co.uk, [database online]