| Marc Williams |
11/07/11 - Present |
| Robert Frie | 11/12/07 - 11/07/11 |
| Ken Fellman | 11/08/99 - 11/12/07 |
| Robert Frie | 11/11/91 - 11/08/99 |
| Lynn Easton | 11/13/89 - 11/11/91 |
| Robert Frie | 11/09/81 - 11/13/89 |
| Vesta Miller | 11/12/79 - 11/08/81 |
| Kenneth Gorrell | 11/14/77 - 11/12/79 |
| Donald Feland | 11/12/73 - 11/14/77 |
| Kenneth Gorrell | 08/28/73 - 11/12/73 |
| Joseph Horan | 03/16/73 - 08/28/73 |
| Lawrence McGinley | 01/09/71 - 03/16/73 |
| Robert Johnson | 11/10/69 - 01/09/71 |
| Richard Bartlett | 11/08/65 - 11/10/69 |
| Ann Jackson | 11/12/63 - 11/08/65 |
| Dr. Gail Gilbert | 11/12/57 - 11/12/63 |
| Lloyd Collins | 1955 - 1957 |
| H.M. Shulenburg | 1952 - 1955 |
| Dr. Thomas Mills | 1950 - 1952 |
| James G. Biggins Jr. | 1936 - 1940 |
| William J. Bennett | 1929 - 1936 |
| A.J. Miller | 1926 - 1929 |
| A.E. Brown | 1925 - 1926 |
| F.C. Murchinson | 1924 - 1925 |
| Pliny O. Clark | 1923 - 1924 |
| Dr. Richard Russell | 1917 - 1923 |
| A.L. Davis | 1915 - 1917 |
| Charles McFadden | 1913 - 1915 |
| E.A. Brandon | 1911 - 1913 |
| Walton Nicoli | 1909 - 1911 |
| Dr. Richard Russell | 1908 - 1909 |
| Morton Alexander | 1907 - 1908 |
| Charles Wood | 1905 - 1907 |
| Dr. Richard Russell | 1904 - 1905 |