For a biographical note see: H.E. Dominicus, Mauthausen. Een gedenkboek (2e herziene en uitgebreide druk; Amsterdam 1999) 155.
According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, this family had a tailor's shop, address: Eerste van Swindenstraat 3 in Amsterdam.
Abstracts of the police archives which are currently at the Amsterdam municipal archives