Johannes Helferich – Kölner Adress-Buch 1844
| Given name | Johannes |
|---|---|
| Family name | Helferich |
| Occupation | Büchsenmacher |
| Address | Großer Griechenmarkt 113 |
| Place | Köln |
| GOV identifier | KOLOLNJO30LW |
| Book | Kölner Adress-Buch 1844 |
| page | 179 |
| Year | 1844 |
| Given name | Johannes |
|---|---|
| Family name | Helferich |
| Occupation | Büchsenmacher |
| Address | Großer Griechenmarkt 113 |
| Place | Köln |
| GOV identifier | KOLOLNJO30LW |
| Book | Kölner Adress-Buch 1844 |
| page | 179 |
| Year | 1844 |