| Former (14) |
| Board of Directors | 2005 – 2017 |
| Board of Directors | 1873 – 2003 |
| Board of Directors | 2001 – 2007 |
| Board of Directors | 2000 – 2017 |
| Board of Directors | 1873 – 1991 |
| Board of Directors | 1873 – 2000 |
| Board of Directors | 2001 – 2017 |
| Board of Directors | 1873 – 1994 |
| Board of Directors | 1873 – 2006 |
| Board of Directors | 2007 – 2017 |
| Board of Directors | 1873 – 1996 |
| Board of Directors | 1873 – 2008 |
| Board of Directors | 1873 – 1994 |
| Board of Directors | 2008 – 2017 |