| Potkay, Joe; 1969 Red Book; 1969 | 1969 Red Book | 1969-00-00 | BEACON | Captain |
| Potkay, Joe; 1969 Red Book; 1969 | 1969 Red Book | 1969-00-00 | | Fleet Engineer |
| Potkay, Joe; 1970 Red Book; 1970 | 1970 Red Book | 1970-00-00 | BEACON | Captain |
| Potkay, Joe; 1971 Red Book; 1971 | 1971 Red Book | 1971-00-00 | BEACON | Captain |
| Potkay, Joe; 1972 Red Book; 1972 | 1972 Red Book | 1972-00-00 | BEACON | Captain |
| Potkay, Joe; 1973 Red Book; 1973 | 1973 Red Book | 1973-00-00 | BEACON | Captain |
| Potkay, Joe; 1975 Red Book; 1975 | 1975 Red Book | 1975-00-00 | BEACON | Captain |
| Potkay, Joe; 1976 Red Book; 1976 | 1976 Red Book | 1976-00-00 | BEACON | Captain |