| Name | Role | Place | Source | |
|---|---|---|---|---|
| W. Doppenberg | Staff member | 1865 | Utrecht | Register of staff |
| W. Doppenberg | Travelers | 1965 | New York | Passenger registers |
| W. Doppenberg | Travelers | 1960 | Rotterdam | Passenger registers |
| W. Doppenberg | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
| W. Doppenberg | Travelers | 1960 | Rotterdam | Passenger registers |
| W. Doppenberg | Travelers | 1949 | Rotterdam | Passenger registers |
| W. Doppenberg | Registered | 1865 | Utrecht | Register of staff |
| W. Doppenberg-IJzenbrand | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
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