Historic Addressbooks Addressbook entry for Julius ZAPP
| Occupation | Oberspinnmeister | 
|---|---|
| Family name | Zapp | 
| Given name | Julius | 
| Address | In der Insel 4 | 
| Place | Alzenberg | 
| Source | 
                 Adressbuch für den württembergischen Oberamtsbezirk Calw im Schwarzwald 1929  |