| Sources |
- [S742] Wisconsin Death Index, 1959-1997, Wisconsin Vital Records Office, (Ancestry.com. Wisconsin Death Index, 1959-1997 [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2007.
Original data: Wisconsin Vital Records Office. Wisconsin Death Index, 1959-67, 1969-97. Madison, Wisconsin, USA: Wisconsin Department of Health.), Frieda L Bongers Death Date 19 Oct 1970, 21 Aug 2014.
*Ancestry.com:* (http://www.ancestry.com: accessed 21 Aug 2014, entry for Frieda L Bongers,born 30 Jul 1891 died 19 Oct 1970; Original data: Wisconsin Vital Records Office. Wisconsin Death Index, 1959-67, 1969-97. Madison, Wisconsin, USA: Wisconsin Department of Health.
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