| Firth, J. W.; 1952 Red Book; 1952 | 1952 Red Book | 1952-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1953 Red Book; 1953 | 1953 Red Book | 1953-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1955 Red Book; 1955 | 1955 Red Book | 1955-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1956 Red Book; 1956 | 1956 Red Book | 1956-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1957 Red Book; 1957 | 1957 Red Book | 1957-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1963 Red Book; 1963 | 1963 Red Book | 1963-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1964 Red Book; 1964 | 1964 Red Book | 1964-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1965 Red Book; 1965 | 1965 Red Book | 1965-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1966 Red Book; 1965 | 1966 Red Book | 1965-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1967 Red Book; 1967 | 1967 Red Book | 1967-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1968 Red Book; 1968 | 1968 Red Book | 1968-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1969 Red Book; 1969 | 1969 Red Book | 1969-00-00 | C. D. HOWE | Chief Engineer |
| Firth, J. W.; 1970 Red Book; 1970 | 1970 Red Book | 1970-00-00 | MONTCALM | Chief Engineer |
| Firth, J. W.; 1971 Red Book; 1971 | 1971 Red Book | 1971-00-00 | MONTCALM | Chief Engineer |
| Firth, J. W.; 1972 Red Book; 1972 | 1972 Red Book | 1972-00-00 | N. B. MCLEAN | Chief Engineer |