| Thornton, George R.; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | IMPERIAL KINGSTON | First Mate |
| Thornton, George R.; 1963 Red Book; 1963 | 1963 Red Book | 1963-00-00 | IMPERIAL LACHINE | Captain |
| Thornton, George R.; 8/48 Great Lakes Review; 1948 | 8/48 Great Lakes Review | 1948-00-00 | IMPERIAL OTTAWA | First Mate |
| Thornton, George R.; Imperial Oil Fleet News; Sum 1952 | Imperial Oil Fleet News; Sum 1952 | 1952-00-00 | IMPERIAL HAMILTON | First Mate |
| Thornton, George R.; Imperial Oil Fleet News; Sum 1952 | Imperial Oil Fleet News; Sum 1952 | 1952-00-00 | IMPERIAL WOODBEND | First Mate |