| Mason, Robert D.; Cliffs News Aug1974 | Cliffs News Aug1974 | 1974-00-00 | CHAMPLAIN | Third Mate |
| Mason, Robert D.; Cliffs News Aug1979 | Cliffs News Aug1979 | 1979-00-00 | THOMAS F. PATTON | Second Mate |
| Mason, Robert D.; Cliffs Officers Assignments 8/8/78; 1978 | Cliffs Officers Assignments 8/8/78 | 1978-00-00 | CHAMPLAIN | Second Mate |
| Mason, Robert D.; Cliffs Seniority list 7/15/78; 1978 | Cliffs Seniority list 7/15/78 | 1978-00-00 | | Third Mate |
| Mason, Robert D.; LCA Crew List 8/11/74; 1974 | LCA Crew List 8/11/74 | 1974-00-00 | CADILLAC | Third Mate |
| Mason, Robert D.; pc J. Clark | pc J. Clark | | CADILLAC | Third Mate |
| Mason, Robert D.; pc J. Clark | pc J. Clark | | CHAMPLAIN | Third Mate |
| Mason, Robert D.; pc J. Clark | pc J. Clark | | CHAMPLAIN | Second Mate |
| Mason, Robert D.; pc J. Clark | pc J. Clark | | CHAMPLAIN | Second Mate |