| Gryskewich, John; Cliffs 1967 Seniority List; 1967 | Cliffs 1967 Seniority List | 1967-00-00 | FRONTENAC | Watchman |
| Gryskewich, John; Cliffs 1975 Seniority list; 1975 | Cliffs 1975 Seniority list | 1975-00-00 | | |
| Gryskewich, John; Cliffs 1975 Seniority list; 1975 | Cliffs 1975 Seniority list | 1975-00-00 | CADILLAC | Watchman |
| Gryskewich, John; Cliffs News Oct 1973 | Cliffs News Oct 1973 | 1973-00-00 | CADILLAC | deckhand |
| Gryskewich, John; LCA Crew List 8/11/74; 1974 | LCA Crew List 8/11/74 | 1974-00-00 | CADILLAC | Watchman |
| Gryskewich, John; pc J. Clark | pc J. Clark | | CADILLAC | Watchman |
| Gryskewich, John; pc J. Clark | pc J. Clark | | CADILLAC | Watchman |
| Gryskewich, John; pc Ken Fountain | pc Ken Fountain | | CHACORNAC | Watchman |