https://www.mappingthelives.org/bio/c6986959-6de2-478c-aa7d-569c11d0b978
Alfred Hirschler (1897 - 1949) - Genealogy (geni.com)
Sister: Flora Koch née Hirschler https://archief.amsterdam/indexen/deeds/985333f1-aa32-56a3-e053-b784100ade19?person=985333f1-aa33-56a3-e053-b784100ade19
https://www.joodsmonument.nl/en/page/190272/flora-koch-hirschler