| Gulbronson, William C. | | | | Wheelsman |
| Gulbronson, William C. | | | | Relief Captain |
| Gulbronson, William C.; 1972 Red Book; 1972 | 1972 Red Book | 1972-00-00 | | relief Captain |
| Gulbronson, William C.; 1973 Red Book; 1973 | 1973 Red Book | 1973-00-00 | | Shore Captain |
| Gulbronson, William C.; 1974 Red Book; 1974 | 1974 Red Book | 1974-00-00 | | Shore Captain |
| Gulbronson, William C.; 1974 Red Book; 1974 | 1974 Red Book | 1974-00-00 | CANADIAN CENTURY | Captain |
| Gulbronson, William C.; 1975 Red Book; 1975 | 1975 Red Book | 1975-00-00 | ST. LAWRENCE NAVIGATOR | Captain |
| Gulbronson, William C.; 1986 Red Book; 1986 | 1986 Red Book | 1986-00-00 | CANADIAN PIONEER | Captain |
| Gulbronson, William C.; 1987 Red Book; 1987 | 1987 Red Book | 1987-00-00 | CANADIAN PIONEER | Captain |
| Gulbronson, William C.; Ship-Shore News April 1967 | Ship-Shore News April 1967 | 1967-00-00 | DOUGLASS HOUGHTON | Captain |
| Gulbronson, William C.; Ship-Shore News April 1968 | Ship-Shore News April 1968 | 1968-00-00 | MEAFORD | Captain |
| Gulbronson, William C.; Ship-Shore News March 1961 | Ship-Shore News March 1961 | 1961-00-00 | GORDON C. LEITCH | First Mate |
| Gulbronson, William C.; ULS News 42(3) | ULS News 42(3) | | SEAWAY QUEEN | First Mate |