Maier Landauer was a native of Buchau. His son Friedrich, also born in Buchau, later continued the business. Friedrich Landauer and his wife Betty,née Uhlfelder

were deported to Theresienstadt in 1942 and murdered in Riga in 1945

There had already been a "Knopf department store" in Ravensburg since 1893. At that time still in rented rooms. 1907 then built the company Geschw. Knopf, Karlsruhe in the best location  of

Ravensburg at the "place" an architecturally benerkenswertes with art nouveau elements decorated new department store.

The origin of the company A. Gutmann & Co. goes back to the year 1840 in Jebenhausen. There, the master weavers Abraham Gutmann, his brother-in-law Simon Raff and his cousin Isak Raff founded a hand weaving mill, which existed in Jebenhausen until 1861, when it was moved to Göppingen. With the relocation of the company to Göppingen, all three company owners also moved their residence to Göppingen. However, the company owners separated in the same year.

Memorial plaque with the following text

Relief of a menorah

"Cemetery of the Jewish Community Castrop-Rauxel from 1743 - 1934 Oldest cemetery in Castrop-Rauxel"

Relief of a Star of David

The Landhaus Lehnitz is a symbol of Jewish life, faith, resistance, self-contemplation of one's own culture and identity, lived care for community members, and therefore of a Jewish community that responds to and shapes the world in which it lives. It is the result of a transformation from a Jewish convalescent home for working women and adolescent girls to a Jewish convalescent home in the midst of National Socialist terror.In 1896 the administrations of the Jewish hospitals and the Poor Commission from the Jewish community of Berlin came together.