See for more information the article "Rosa de Swaan vergeten we niet meer" in the Twentsche Courant Tubantia of thursday 11 September 2008, p. 30 en 31.
The article is about the placing of so-called 'Stolpersteine' in front of the houses where Jewish victims in Glanerbrug (Enschede) lived.
In addition, a Jokos file (number 54590) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.