| Ketola, Robert O. | | | E. G. GRACE | Second Mate |
| Ketola, Robert O. | | | CHARLES M. SCHWAB | mate |
| Ketola, Robert O. | | | CHARLES M. BEEGHLY | First Mate |
| Ketola, Robert O. | | | E. G. GRACE | Captain |
| Ketola, Robert O.; 1974 Red Book; 1974 | 1974 Red Book | 1974-00-00 | COLONEL JAMES PICKANDS | Captain |
| Ketola, Robert O.; 1977 Red Book; 1977 | 1977 Red Book | 1977-00-00 | J. L. MAUTHE | Captain |
| Ketola, Robert O.; 1978 Red Book; 1978 | 1978 Red Book | 1978-00-00 | J. L. MAUTHE | Captain |
| Ketola, Robert O.; 1979 Red Book; 1979 | 1979 Red Book | 1979-00-00 | J. L. MAUTHE | Captain |
| Ketola, Robert O.; 1980 Red Book; 1980 | 1980 Red Book | 1980-00-00 | CHARLES M. BEEGHLY | Captain |
| Ketola, Robert O.; Great Lakes News 8/48; 1948 | Great Lakes News 8/48 | 1948-00-00 | ODANAH | Third Mate |
| Ketola, Robert O.; Interlake Log December 1980 | Interlake Log December 1980 | 1980-00-00 | HENRY G. DALTON | Third Mate |
| Ketola, Robert O.; Interlake Log July 1948 | Interlake Log July 1948 | 1948-00-00 | AMASA STONE | Third Mate |
| Ketola, Robert O.; Interlake Log May 1952 | Interlake Log May 1952 | 1952-00-00 | YOUNGSTOWN | Second Mate |
| Ketola, Robert O.; LCA Bulletin 5/48; 1948 | LCA Bulletin 5/48 | 1948-00-00 | | Wheelsman |