| 1911-12 |
William Logan (1856-1912) |
| 1912, 1920-21 & 1924 |
Henry W. Hutchings (Acting) (1887-1955) |
| 1912 |
Robert H. Chapman (Acting) (1868-1920) |
| 1912-14 |
James L. Galen (1871-?) |
| 1914-17 |
Samuel F. Ralston (Supervisor) (1864-?) |
| 1917 & 1920 |
George E. Goodwin (Acting) (1875-?) |
| 1917-20 |
Walter W. Payne (1872-?) |
| 1921-24, 1927-31 |
J. Ross Eakin (1879-1946) |
| 1924-27 |
Charles J. Kraebel (1889-?) |
| 1927 |
R. Ray Vincent (Acting) (1892-1962) |
| 1931-38 |
Eivind T. Scoyen (1896-?) |
| 1939-44 |
Donald S. Libbey (1882-1959) |
| 1944-58 |
John W. Emmert (1888-?) |
| 1958 |
Stanley C. Joseph (Acting) (1913-?) |
| 1958-62 |
Edward A. Hummel (1909-?) |
| 1962-64 |
Harthon L. Bill (1911-?) |
| 1964-69 |
Keith P. Nielson (1905-1981) |
| 1969-74 |
William J. Briggle (1925-) |
| 1974-80 |
Phillip Iverson (1924-) |
| 1980-86 |
Robert C. Haraden (1922-) |
| 1986-94 |
H. Gilbert Lusk (1943-) |
| 1994-1999 |
David A. Mihalic (1946-) |
|
2000-2001
|
Suzanne Lewis (1956-) |
| 2002-2008 |
Michael (Mick) O. Holm (1949-) |
| 2008 |
|
