| Ritchie, Jack P.; Cliffs 1975 Seniority list; 1975 | Cliffs 1975 Seniority list | 1975-00-00 | CHARLES M. WHITE | Wheelsman |
| Ritchie, Jack P.; Cliffs News July 1978 | Cliffs News July 1978 | 1978-00-00 | CHARLES M. WHITE | Wheelsman |
| Ritchie, Jack P.; Cliffs Seniority list 6/15/81; 1981 | Cliffs Seniority list 6/15/81 | 1981-00-00 | WALTER A. STERLING | deckhand |
| Ritchie, Jack P.; Cliffs Seniority list 6/26/80; 1980 | Cliffs Seniority list 6/26/80 | 1980-00-00 | | |
| Ritchie, Jack P.; Cliffs Seniority list 6/26/80; 1980 | Cliffs Seniority list 6/26/80 | 1980-00-00 | RAYMOND H. REISS | Wheelsman |
| Ritchie, Jack P.; Cliffs Seniority list 7/15; 1915 | Cliffs Seniority list 7/15 | 1915-00-00 | EDWARD B. GREENE | deckhand |
| Ritchie, Jack P.; Cliffs Seniority list October 1977 | Cliffs Seniority list October 1977 | 1977-00-00 | CHARLES M. WHITE | Wheelsman |
| Ritchie, Jack P.; Cliffs Seniority List, 7/80; 1980 | Cliffs Seniority List, 7/80 | 1980-00-00 | | |