| Detjen, Harry R.; 1981 Red Book; 1981 | 1981 Red Book | 1981-00-00 | WILLIAM P. SNYDER JR. | Chief Engineer |
| Detjen, Harry R.; Cliffs Assignments 9/18/73; 1973 | Cliffs Assignments 9/18/73 | 1973-00-00 | CHARLES M. WHITE | Second Assistant |
| Detjen, Harry R.; Cliffs News Aug 1976 | Cliffs News Aug 1976 | 1976-00-00 | PONTIAC | Chief Engineer |
| Detjen, Harry R.; Cliffs News Oct 1976 | Cliffs News Oct 1976 | 1976-00-00 | PONTIAC | First Assistant |
| Detjen, Harry R.; Cliffs Officers Assignments 3/27/79; 1979 | Cliffs Officers Assignments 3/27/79 | 1979-00-00 | WILLIAM P. SNYDER JR. | Chief Engineer |
| Detjen, Harry R.; Cliffs Officers Assignments 8/26/80; 1980 | Cliffs Officers Assignments 8/26/80 | 1980-00-00 | WILLIAM P. SNYDER JR. | Chief Engineer |
| Detjen, Harry R.; Cliffs Officers Assignments 8/8/78; 1978 | Cliffs Officers Assignments 8/8/78 | 1978-00-00 | WILLIAM P. SNYDER JR. | Chief Engineer |
| Detjen, Harry R.; Cliffs Vessel Officers 1972 fitout; 1972 | Cliffs Vessel Officers 1972 fitout | 1972-00-00 | TOM M. GIRDLER | Third Assistant |
| Detjen, Harry R.; Cliffs Vessel Officers Seniority 6/26/80; 1980 | Cliffs Vessel Officers Seniority 6/26/80 | 1980-00-00 | | First Assistant |