The Hamburger family was a pious family and ate only kosher food. In 1942 Ludwig Otto Blumenthal and his wife lived with them for a couple of months.
Addition of a visitor of the website
In addition, a Jokos file (number 54034) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
Person is in the National Database of Victims of Persecution