| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jakob Hellinger | Tewerkgestelde | 's-Gravenhage, Amsterdam | Workforce registration | |
| Jakob Hellingh | Registered | 1920 | Amsterdam | Workforce registration |
| Jakob Hellingh | Tewerkgestelde | 's-Gravenhage | Workforce registration | |
| Jakob Hellingh | Tewerkgestelde | 's-Gravenhage, Amsterdam | Workforce registration | |
| Jakob Hellingh | Tewerkgestelde | 's-Gravenhage, Amsterdam | Workforce registration | |
| Jakob Hellingh | Tewerkgestelde | 's-Gravenhage | Workforce registration | |
| Jakob Willem Helling | Tewerkgestelde | 's-Gravenhage, Amsterdam | Workforce registration |
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