| Name | Role | Place | Source | |
|---|---|---|---|---|
| H. Leeuwenkamp | Travelers | 1956 | New York | Passenger registers |
| H. Leeuwenkamp | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
| H. Leeuwenkamp | Travelers | 1956 | New York | Passenger registers |
| H. van Leeuwenkamp | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
| Johannes H Leeuwenkamp | Registered | 1925 | Vinkeveen en Waverveen | Population register |
| Johannes H Leeuwenkamp | Registered | Breukelen | Population register |
The term H. Leeuwenkamp appears in user-added comments on documents 1
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