| Cummings, John I.; 1969 Red Book; 1969 | 1969 Red Book | 1969-00-00 | SAMUEL MATHER | Captain |
| Cummings, John I.; 1970 Red Book; 1970 | 1970 Red Book | 1970-00-00 | E. G. GRACE | Captain |
| Cummings, John I.; 1971 Red Book; 1971 | 1971 Red Book | 1971-00-00 | SAMUEL MATHER | Captain |
| Cummings, John I.; 1972 Red Book; 1972 | 1972 Red Book | 1972-00-00 | E. G. GRACE | Captain |
| Cummings, John I.; 1973 Red Book; 1973 | 1973 Red Book | 1973-00-00 | E. G. GRACE | Captain |
| Cummings, John I.; Great Lakes News 2/48; 1948 | Great Lakes News 2/48 | 1948-00-00 | C. S. ROBINSON | First Mate |
| Cummings, John I.; Great Lakes News 5/44; 1944 | Great Lakes News 5/44 | 1944-00-00 | JAMES H. REED | Third Mate |
| Cummings, John I.; Interlake Log June 1958 | Interlake Log June 1958 | 1958-00-00 | JOHN SHERWIN | Second Mate |
| Cummings, John I.; Interlake Log May 1950 | Interlake Log May 1950 | 1950-00-00 | ROBERT HOBSON | Second Mate |
| Cummings, John I.; Interlake Log May 1952 | Interlake Log May 1952 | 1952-00-00 | CALUMET | First Mate |
| Cummings, John I.; Interlake Log October 1973 | Interlake Log October 1973 | 1973-00-00 | PATHFINDER | deckwatch |
| Cummings, John I.; LCA/GLPA Bulletin, 5/43; 1943 | LCA/GLPA Bulletin, 5/43 | 1943-00-00 | HENRY G. DALTON | Wheelsman |