| Name | Role | Place | Source | |
|---|---|---|---|---|
| C Hamaker | Decorated | 's-Gravenhage | Registration honors | |
| C. Hamaker | Registered | 1868 | Amsterdam | Family cards |
| C. Hamaker | Registered | 1904 | Amsterdam | Family cards |
| C. Hamaker | Travelers | 1963 | New York | Passenger registers |
| C. Hamaker | Travelers | 1962 | Rotterdam | Passenger registers |
| C. Hamaker | Military | Pension registry | ||
| C. Hamaker | Mention | 1938 | Nijmegen | Inschrijvingsregister Vierdaagse |
| Hendrika C. Hamaker | Registered | 1910 | Nijmegen | Population register |
| Hendrika C. Hamaker | Registered | 1910 | Nijmegen | Population register |
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