| 1899 to 1914 |
Mathes, Edward T., Dr. |
| 1915 to 1922 |
Nash, George, Dr. |
| 1922 to 1923 |
Waldo, Dwight B., Dr. |
| 1923 to 1939 |
Fisher, Charles H., Dr. |
| 1939 to 1959 |
Haggard, William, Dr. |
| 1959 to 1964 |
Jarrett, James L., Dr. |
| 1964 to 1967 |
Bunke, Harvey C., Dr. |
| 1967 to 1975 |
Flora, Charles J., Dr. |
| 1975 to 1982 |
Olscamp, Paul J., Dr. |
| 1983 to 1987 |
Ross, G. Robert, Dr. |
| 1988 to 1993 |
Mortimer, Kenneth P., Dr. |
| 1993 to Present |
Morse, Karen W., Dr. |
|
| 1964 to 1965 |
Woodring, Paul, Dr. |
| 1982 to 1983 |
Talbot, James L., Dr. |
| 1987 to 1988 |
Froderberg, Albert J., Dr. |
| 1993 to 1993 |
DeLorme, Roland L., Dr. |
|
