| Gray, Thomas; 1899 Red Book; 1899 | 1899 Red Book | 1899-00-00 | CHIEFTAIN | Chief Engineer |
| Gray, Thomas; 1900 Red Book; 1900 | 1900 Red Book | 1900-00-00 | CHIEFTAIN | Chief Engineer |
| Gray, Thomas; 1901 Red Book; 1901 | 1901 Red Book | 1901-00-00 | CHIEFTAIN | Chief Engineer |
| Gray, Thomas; 1902 Red Book; 1902 | 1902 Red Book | 1902-00-00 | CHIEFTAIN | Chief Engineer |
| Gray, Thomas; 1903 Red Book; 1903 | 1903 Red Book | 1903-00-00 | CHIEFTAIN | Chief Engineer |
| Gray, Thomas; 1906 Red Book; 1906 | 1906 Red Book | 1906-00-00 | CHIEFTAIN III | Chief Engineer |
| Gray, Thomas; 1907 Red Book; 1907 | 1907 Red Book | 1907-00-00 | CHIEFTAIN III | Chief Engineer |
| Gray, Thomas; 1909 Red Book; 1909 | 1909 Red Book | 1909-00-00 | CHIEFTAIN | Chief Engineer |
| Gray, Thomas; 1910 Red Book; 1910 | 1910 Red Book | 1910-00-00 | CHIEFTAIN | Chief Engineer |
| Gray, Thomas; 1911 Red Book; 1911 | 1911 Red Book | 1911-00-00 | INDIA | Chief Engineer |
| Gray, Thomas; 1912 Red Book; 1912 | 1912 Red Book | 1912-00-00 | CORNWALL | Chief Engineer |
| Gray, Thomas; 1913 Red Book; 1913 | 1913 Red Book | 1913-00-00 | CORNWALL | Chief Engineer |