In the address book of the city of Munich 1923, the following entries can be found: Sonder Sali, Kaufmann,Andréestr.2 T - Sonder Sali, Farbenfabrik, Öl, Fett- und Lackhandlung. Business. Andréest.2 T, warehouse Donnersbergerstr. 9b ( Inh. Sali Sonder u. Julius Stern ). Sali Sonder was married to Karoline Stern, born on 18.02.1884 in Reckendorf, district Bamberg. Her brother Julius Stern and Saly Sonder were partners of Sali Sonder OHG.

In the Berlin address book - edition 1910 is the following entry - Adolf Maaß, factory antiseptic articles, SW 68, Alte Jakobstr.109, H. II. T. I. 9405 (BK) Inh. Adolf u. Richard Maaß

In the available sources there are no references to the exact date of the foundation of the old Jüdische cemetery in Hülchrath. A cadastral map from 1811 describes the plot as "Old Jüden Kirchhof". Due to the high groundwater level, the land was repeatedly flooded. 1900 at the end of today's Jahnstraße the new Jüdische cemetery was created, on which 1907 the first burial took place.

Residential and business house of the Wolff brothers. 1884 reconstruction of the building with a representative staircase to the street. Special feature is a hall with ceiling painting ("Hall of Angels").
Building is classified as a single monument.

Already in 1787 there was a prayer hall in Mauristra;e. In 1859 the synagogue was consecrated here. In 1938 the interior of the synagogue was damaged and destroyed during the November pogrom. Since there was a gasoline depot near the building, the synagogue was not set on fire. Non-Jewish residents feared for the safety of their own homes. After the pogrom, the synagogue was taken out of the possession of the Jewish community and from 1939 was used as accommodation for Polish and Russian prisoners of war. After 1945, the building became private property and was used as a storage shed.

Already before 1526 there was a Jewish cemetery in Hemmerden. The plot was donated to the community by the sovereign Elisabeth zu Salm-Dyck. When all Jewish inhabitants had to leave the village in that year, the cemetery was abandoned. The old Jewish cemetery of Hemmerden was located at the Stesser Mühle. The land was returned to the original owners in 1826. Schulte gives 1827 as the year of foundation of the new, still existing Jewish cemetery. The database Epidat as well as Pracht-Jürns mention 1813 as another possible year of foundation.