In the address book of the city of Zürich from 1935 the following entries can be found: Guggenheim, Berthold (Guggenheim), merchant, Gotthardstra;e 55 - In the Archiv für Zeitgeschichte - ETH Zürich the following entry can be found: Guggenheim Berthold ( 13.2.1880 - ? ), textile merchant. -In 1926 Berthold Guggenheim founded the company Bégé AG ". The company was mainly active in the wholesale of manufactured goods (white goods, plain and colorful woven shirting fabrics, woven and printed shawl fabrics) exclusively on the Swiss market.

Josef Lammfromm was born on July 15, 1804. He was married to Fanni Lammfromm, née Ichenhaeuser and in 2nd marriage to  Peppi Lammfromm, née Sänger. From this marriage came the two sons - Jakob, born on November 21, 1858 and Israel, born on November 13, 1863. Josef Lammfromm ran a spear and iron shop in Buttenwiesen. Based on the attached postcard, it can be assumed that the business of Josef Lammfromm continued under his name after his death on September 25, 1872.

In the Nürnberger - Fürther - Industrie - Almanach 1. 1870 the following entry is found: Kohn, Mayer, Owner: Josef and Anton Kohn, Bankgeschäft. Königstra;e 26.  -                  After Josef Kohn moved to Germany on 24. On May 24, 1850, Josef Kohn and Anton Kohn became the first Jews in 350 years to be granted the right to settle in the city of Nuremberg.

In the address book of the city of Strasbourg in 1911, there is the following entry: Leopold Dreifuss, Weingroßhandlung, Lange Strasse 101, owner Leopold Dreifuss, apartment: Roseneck 6.