| Williamson, Gordon R.; 1945 Red Book; 1945 | 1945 Red Book | 1945-00-00 | OTTAWALITE | Captain |
| Williamson, Gordon R.; 1949 Red Book; 1949 | 1949 Red Book | 1949-00-00 | IMPERIAL MIDLAND | Captain |
| Williamson, Gordon R.; 1950 Red Book; 1950 | 1950 Red Book | 1950-00-00 | IMPERIAL MIDLAND | Captain |
| Williamson, Gordon R.; 1953 Red Book; 1953 | 1953 Red Book | 1953-00-00 | IMPERIAL KINGSTON | Captain |
| Williamson, Gordon R.; 1954 Red Book; 1954 | 1954 Red Book | 1954-00-00 | IMPERIAL WINDSOR | Captain |
| Williamson, Gordon R.; 1955 Red Book; 1955 | 1955 Red Book | 1955-00-00 | IMPERIAL WINDSOR | Captain |
| Williamson, Gordon R.; 1956 Red Book; 1956 | 1956 Red Book | 1956-00-00 | IMPERIAL WINDSOR | Captain |
| Williamson, Gordon R.; 1957 Red Book; 1957 | 1957 Red Book | 1957-00-00 | IMPERIAL WINDSOR | Captain |
| Williamson, Gordon R.; 1958 Red Book; 1958 | 1958 Red Book | 1958-00-00 | IMPERIAL WINDSOR | Captain |
| Williamson, Gordon R.; 1959 Red Book; 1959 | 1959 Red Book | 1959-00-00 | IMPERIAL COLLINGWOOD | Captain |
| Williamson, Gordon R.; 1960 Red Book; 1960 | 1960 Red Book | 1960-00-00 | IMPERIAL COLLINGWOOD | Captain |
| Williamson, Gordon R.; 1961 Red Book; 1961 | 1961 Red Book | 1961-00-00 | IMPERIAL HAMILTON | Captain |
| Williamson, Gordon R.; 1962 Red Book; 1962 | 1962 Red Book | 1962-00-00 | IMPERIAL WELLAND | Captain |
| Williamson, Gordon R.; 8/48 Great Lakes Review; 1948 | 8/48 Great Lakes Review | 1948-00-00 | IMPERIAL MIDLAND | Captain |
| Williamson, Gordon R.; Imperial Oil Fleet News; Sum 1952 | Imperial Oil Fleet News; Sum 1952 | 1952-00-00 | | deckhand |
| Williamson, Gordon R.; Imperial Oil Fleet News; Sum 1952 | Imperial Oil Fleet News; Sum 1952 | 1952-00-00 | IMPERIAL MIDLAND | Captain |
| Williamson, Gordon R.; Imperial Oil Fleet News; Sum 1952 | Imperial Oil Fleet News; Sum 1952 | 1952-00-00 | IMPERIAL MIDLAND | Captain |