| Year | Director |
| 1956-1961 | Russell Woodburn |
| 1961-1963 | Carl Miller |
| 1963-1969 | Donald Parsons |
| 1969-1974 | August Robinson |
| 1974 | Roger McHenry (acting) |
| 1974-1978 | Donn De Coursey |
| 1978-1979 | Roger McHenry (acting) |
| 1979-1981 | Donn De Coursey |
| 1981-1988 | Neil Coleman |
| 1988-1992 | Calvin Mutchler |
| 1992-1996 | George Foster |
| 1996-1998 | Mathias Römkens (acting) |
| 1998-2014 | Mathias Römkens (recently retired) |