| Leonard, John; 1912 Red Book; 1912 | 1912 Red Book | 1912-00-00 | HAROLD | Captain |
| Leonard, John; Cliffs News Oct 1976 | Cliffs News Oct 1976 | 1976-00-00 | CHARLES M. WHITE | Third Assistant |
| Leonard, John; Detroit Free Press 3/31/49; 1949 | Detroit Free Press 3/31/49 | 1949-00-00 | NIAGARA | Chief Engineer |
| Leonard, John; Great Lakes News 7/36; 1936 | Great Lakes News 7/36 | 1936-00-00 | CALCITE | Chief Cook |
| Leonard, John; Great Lakes News 7/36; 1936 | Great Lakes News 7/36 | 1936-00-00 | CALCITE | Chief Cook |
| Leonard, John; Great Lakes News 9/39; 1939 | Great Lakes News 9/39 | 1939-00-00 | JOHN G. MUNSON | Chief Cook |
| Leonard, John; Toronto Hist.Soc. | Toronto Hist.Soc. | | NIAGARA | Chief Engineer |