| Mallett, Sr., J.; ISMA Directory; 1906 | ISMA Directory | 1906-00-00 | WITBECK, HENRY | Captain |
| Mallett, Sr., J.; ISMA Directory; 1907 | ISMA Directory | 1907-00-00 | WITBECK, HENRY | Captain |
| Mallett, Sr., J.; ISMA Directory; 1908 | ISMA Directory | 1908-00-00 | WITBECK, HENRY | Captain |
| Mallett, Sr., J.; ISMA Directory; 1909 | ISMA Directory | 1909-00-00 | TWIN SISTERS | Captain |
| Mallett, Sr., J.; ISMA Directory; 1910 | ISMA Directory | 1910-00-00 | TWIN SISTERS | Captain |
| Mallett, Sr., J.; ISMA Directory; 1911 | ISMA Directory | 1911-00-00 | TWIN SISTERS | Captain |
| Mallett, Sr., J.; ISMA Directory; 1912 | ISMA Directory | 1912-00-00 | TWIN SISTERS | Captain |
| Mallett, Sr., J.; ISMA Directory; 1913 | ISMA Directory | 1913-00-00 | TWIN SISTERS | Captain |
| Mallett, Sr., J.; ISMA Directory; 1914 | ISMA Directory | 1914-00-00 | TWIN SISTERS | Captain |