- Document ID: 132164139
- Document Collection: 7-14-1 Documentation of the CLI
- Link to Online Archive: https://collections.arolsen-archives.org/de/document/132164139
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#dutch
#jew
https://www.joodsmonument.nl/en/page/590545/helena-sondervan
Helena (Leny) Sondervan, „twin“ (1913 - 2000) - Genealogy (geni.com)
https://www.online-begraafplaatsen.nl/graf/1975034/3153674/Helena-Sondervan-1913-2000
https://www.maxvandam.info/humo-gen/family/1/F64938?main_person=I171301