Three Stolpersteine (stumbling stones) are located at Hamstraat 20A in memory of Manuel Bloemendaal, Manuel Bloemendaal and Walter Bloemendaal.
Rosine Bloemendaal-Nathan
- Date of birth: June 26, 1870
- Date of death: May 14, 1943
- Place of death: Sobibor
- Reason for death: Jewish
Manuel Bloemendaal
- Date of birth: October 8, 1876
- Date of death: May 14, 1943
- Place of death: Sobibor
- Reason for death: Jewish
Walter Bloemendaal
- Date of birth: October 17, 1904
- Date of death: March 31, 1944
- Place of death: Central Europe
- Reason for death: Jewish