Gust. Helmke – Adressbuch Oldenburg (Oldenburg) 1901
| Given name | Gust. |
|---|---|
| Family name | Helmke |
| Occupation | Postaush. |
| Address | Sonnenstraße 16 |
| Place | Oldenburg |
| GOV identifier | OLDURGJO43CE |
| Book | Adressbuch Oldenburg (Oldenburg) 1901 |
| page | II-150 |
| Year | 1901 |
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