The address book of the city of Munich from 1887 contains the following entries - Weil Moriz, grocer, Hartmannstr.7, - Weil Hermann, merchant, Ottostraße 5, - Geschäfts-Lokal Hartmannstraße 7 -  Moriz Weil was born in Wallerstein on February 13, 1814. The roots of his ancestors go back to 1653, when Nemb Weil was born in Wallerstein. Moriz Weil´s parents were Löw Isak Weil, born in Wallerstein in 1778, and Fradel Weil, née Hausmann from Harburg. Moriz Weil was married to Charlotte Gutmann, born in Hainsfarth in 1817.

The roots of Leopold Gompertz go back to Mordechai Gumpel before 1516.  Mordechai Juda Gumpel, father of Rabbi Salomon ben Mordechai Gompel Emmerich (Gumpel), was born in Emmerich between 1531 and 1545. Leopold Gompertz was married to Henriette Charlotte Wetzlar, born on February 3, 1864 in Frankfurt am Main, whose family roots can be traced back to Amschel Wetzlar, who died in Frankfurt am Main in 1604. Leopold and Henriette Charlotte Gompertz had a son - Leon Julius Bernhard Gompertz, born on January 25, 1888 in Amsterdam - died on July 15, 1943 in Amsterdam.

Leo Lewy was born on October 2, 1880 in Memel. His parents were Israel Lewy and Lina Lewy, née Hirschfeld. Leo Lewy was married to Hedwig Erna Thiel, born on June 28, 1896 in Königsberg. Married in 1919 in Königsberg. The marriage was divorced on September 29, 1942 in K nigsberg.

Simon Klein was born on December 8, 1840 in Gnodstadt. His parents were Ascher Klein and Dina Klein, née Haussmann. He had been married since April 16, 1866 to Amalie Baer, born on April 13, 1847 in Oettingen, daughter of Moses Baer (Hainsfarth) and Ester Baer, née Badmann. Simon and Amalie Klein had 12 children. Simon Klein died on May 16, 1892 in a surgical clinic in Erlangen. Simon Klein was laid to rest in the Jewish cemetery in Oettingen. Amelie Klein was also buried there. She died in Oettingen on April 13, 1918.

About the card - The postcard was addressed to the 8-year-old Julius Neumeyer, who of course still lived with his parents at that time, and the sender of the card was Sophie Rosenau, the mother of Emma Neumeyer and grandmother of Julius Neumeyer, born on May 16, 1898 in Chemnitz.

The population register of the town of Cassel and the villages of Harleshausen, Ihringshausen, Niedervellmar, Niederzwehren, Oberzwehren, Sandershausen, Waldau, Wilhelmshöhe, Wolfsanger, Gartenstadt Brasselsberg and Gutsbezirk Fasanenhof from 1920/21 contains the following entries: Israel Max, merchant, owner of the company. Sander Israel, Spohrstr. 9 1/2 - Israel Sander, grain, fodder and fertilizer, owner Max Israel, Spohrstr. 9 1/2  -  Israel Sander, private owner, Nebelthaustr.14.

Gustav Löwenstein, born in 1866, was the owner of the shoe shop Böttcherstraße 1. 1938 ‚Protective custody‘ in Buchenwald, 1942 murdered in Auschwitz.

Hans Lewin, born on March 2, 1898, owner of the specialty store for men's clothing, children's clothing and workwear, formerly Bekleidungshaus Joseph Lubranschik. On August 3, 1939, Hans Lewin fled to Australia with his wife Fridel and son Edgar via Marseille, thus saving their lives.