Corn. Janssen – Adressbuch der Haupt- und Residenz-Stadt Breslau 1868
| Given name | Corn. |
|---|---|
| Family name | Janssen |
| Occupation | Instrumentenbauer |
| Address | Ring 50 |
| Place | Breslau |
| GOV identifier | BREADTJO81MC |
| Book | Adressbuch der Haupt- und Residenz-Stadt Breslau 1868 |
| page | 147 |
| Year | 1868 |
| Etage | H.II. |