| Chairman | 1939 – 1996 |
| Board of Directors | 1939 – 1994 |
| Board of Directors | 1939 – 1996 |
| Board of Directors | 1939 – 1996 |
| Board of Directors | 1939 – 1993 |
| Board of Directors | 1939 – 1996 |
| Board of Directors | 1939 – 1995 |
| Board of Directors | 1939 – 1993 |
| Board of Directors | 1939 – 1993 |
| Board of Directors | 1939 – 1988 |
| Board of Directors | 1939 – 1996 |
| Board of Directors | 1939 – 1991 |
| Board of Directors | 1939 – 1996 |
| Board of Directors | 1939 – 1991 |
| Board of Directors | 1939 – 1990 |