https://www.joodsmonument.nl/nl/page/126878/isaac-van-creveld
https://www.maxvandam.info/humo-gen/family/1/F28298?main_person=I76013
https://spanjestrijders.nl/bio/creveld-isaac-van
Isaac van Creveld (1898 - 1945) - Genealogy (geni.com)
https://map.stolpersteine.app/nl/rotterdam/locaties/frank-v-borselenstraat-6a