https://www.maxvandam.info/humo-gen/family/1/F63679?main_person=I168201
https://www.joodsmonument.nl/nl/page/207331/sara-van-zanten-van-rooijen
Sara van Rooijen (1876 - 1943) - Genealogy (geni.com)
https://archief.amsterdam/indexen/deeds/9853340a-5fe1-56a3-e053-b784100ade19?person=9853340a-5fe2-56a3-e053-b784100ade19