https://www.oorlogsbronnen.nl/tijdlijn/a486984a-2055-469c-93a0-953b2c4b85e3
https://www.maxvandam.info/humo-gen/family/1/F57347?main_person=I152514
his father, Levie https://www.joodsmonument.nl/nl/page/154164/levie-de-leeuw
Abraham de Leeuw (1911 - 1990) - Genealogy (geni.com)
https://archief.amsterdam/indexen/deeds/98533427-150e-56a3-e053-b784100ade19?person=98533427-150f-56a3-e053-b784100ade19