| Position holders | |||
|---|---|---|---|
| Holder | Start date | End date | |
| Ray Pleasant Politician | - | - | |
| Bob Latz Politician | - | - | |
| John Warren Johnson Politician | - | - | |
| Howard Swenson Politician | - | - | |
| William Nelson Kelly Politician | - | - | |
| Jim Pehler Politician | - | - | |
| Arnold E. Kempe Politician | - | - | |
| Donald L. Friedrich Politician | - | - | |
| Richard H. Hanson Politician | - | - | |
| Richard H. Jefferson Politician | - | - | |
| Norman R. DeBlieck Politician | - | - | |
| Lee Greenfield Politician | - | - | |
| Terry Dempsey Politician | - | - | |
| Mary Murphy Politician | - | - | |
| Paul Overgaard Politician | - | - | |