| Dupont, John; 1899 Red Book; 1899 | 1899 Red Book | 1899-00-00 | MARUBA | Chief Engineer |
| Dupont, John; 1900 Red Book; 1900 | 1900 Red Book | 1900-00-00 | MARUBA | Chief Engineer |
| Dupont, John; 1901 Red Book; 1901 | 1901 Red Book | 1901-00-00 | GRECIAN | Chief Engineer |
| Dupont, John; 1903 Red Book; 1903 | 1903 Red Book | 1903-00-00 | RENSSELAER | Chief Engineer |
| Dupont, John; 1904 Red Book; 1904 | 1904 Red Book | 1904-00-00 | RENSSELAER | Chief Engineer |
| Dupont, John; 1905 Red Book; 1905 | 1905 Red Book | 1905-00-00 | ELBERT H. GARY | Chief Engineer |
| Dupont, John; 1906 Red Book; 1906 | 1906 Red Book | 1906-00-00 | ELBERT H. GARY | Chief Engineer |
| Dupont, John; 1907 Red Book; 1907 | 1907 Red Book | 1907-00-00 | ELBERT H. GARY | Chief Engineer |
| Dupont, John; 1908 Lynn's; 1908 | 1908 Lynn's | 1908-00-00 | ELBERT GARY | Chief Engineer |
| Dupont, John; 1910 Red Book; 1910 | 1910 Red Book | 1910-00-00 | EUGENE J. BUFFINGTON | Chief Engineer |
| Dupont, John; 1911 Red Book; 1911 | 1911 Red Book | 1911-00-00 | EUGENE J. BUFFINGTON | Chief Engineer |
| Dupont, John; 1926 Blue Book; 1926 | 1926 Blue Book | 1926-00-00 | H. A. ROCK | Chief Engineer |
| Dupont, John; 1979 Red Book; 1979 | 1979 Red Book | 1979-00-00 | | President |
| Dupont, John; Great Lakes News 2/44; 1944 | Great Lakes News 2/44 | 1944-00-00 | GRECIAN | Chief Engineer |