| Mason, John; 1899 Red Book; 1899 | 1899 Red Book | 1899-00-00 | JOHN A. FRANCOMBE | Captain |
| Mason, John; 1900 Red Book; 1900 | 1900 Red Book | 1900-00-00 | JOHN A. FRANCOMBE | Captain |
| Mason, John; 1902 Red Book; 1902 | 1902 Red Book | 1902-00-00 | MAGNETIC | Captain |
| Mason, John; 1903 Red Book; 1903 | 1903 Red Book | 1903-00-00 | F. A. GEORGER | Captain |
| Mason, John; 1906 Red Book; 1906 | 1906 Red Book | 1906-00-00 | A. A. CARPENTER | Captain |
| Mason, John; 1907 Red Book; 1907 | 1907 Red Book | 1907-00-00 | A. A. CARPENTER | Captain |
| Mason, John; 1908 Lynn's; 1908 | 1908 Lynn's | 1908-00-00 | A. A. CARPENTER | Captain |
| Mason, John; 1910 Red Book; 1910 | 1910 Red Book | 1910-00-00 | IRON QUEEN | Captain |
| Mason, John; 1911 Red Book; 1911 | 1911 Red Book | 1911-00-00 | IRON QUEEN | Captain |
| Mason, John; 1912 Red Book; 1912 | 1912 Red Book | 1912-00-00 | IRON QUEEN | Captain |
| Mason, John; 1949 Blue Book; 1949 | 1949 Blue Book | 1949-00-00 | PRESQUE ISLE | First Assistant |
| Mason, John; 1959 Red Book; 1959 | 1959 Red Book | 1959-00-00 | THE STRAITS OF MACKINAC | Chief Engineer |
| Mason, John; 1960 Red Book; 1960 | 1960 Red Book | 1960-00-00 | THE STRAITS OF MACKINAC | Chief Engineer |
| Mason, John; 1961 Red Book; 1961 | 1961 Red Book | 1961-00-00 | THE STRAITS OF MACKINAC | Chief Engineer |
| Mason, John; 1962 Red Book; 1962 | 1962 Red Book | 1962-00-00 | THE STRAITS OF MACKINAC | Chief Engineer |
| Mason, John; 1963 Red Book; 1963 | 1963 Red Book | 1963-00-00 | THE STRAITS OF MACKINAC | Chief Engineer |
| Mason, John; 1964 Red Book; 1964 | 1964 Red Book | 1964-00-00 | THE STRAITS OF MACKINAC | Chief Engineer |
| Mason, John; 1965 Red Book; 1965 | 1965 Red Book | 1965-00-00 | THE STRAITS OF MACKINAC | Chief Engineer |
| Mason, John; Great Lakes Review. 1944 | Great Lakes Review. 1944 | 1944-00-00 | CHACORNAC | First Assistant |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | NEW HAMPSHIRE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | PORTAGE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | PORTAGE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | PORTAGE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | PORTAGE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | CHAMPION | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | PLANET | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DAVID VANCE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DAVID VANCE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DAVID VANCE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DAVID VANCE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DAVID VANCE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DAVID VANCE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | DAVID VANCE | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SAN DIEGO | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SAN DIEGO | Captain |
| Mason, John; Mansfield, 1899 | Mansfield, 1899 | 1899-00-00 | SAN DIEGO | Captain |
| Mason, John; Toronto Hist.Soc. | Toronto Hist.Soc. | | CITY OF OWEN SOUND | First Cook |