William Hersey Hopkins 1886-1890
John Franklin Goucher 1890-1908; 1908-1922
Eugene Allen Noble 1908-1911
John Blackford Van Meter 1911-1913 (Acting)
William Westley Guth 1913-1929
Hans Froelicher May 1929-January 1930 (Acting)
Dorothy Stimson January – June 1930 (Acting)
David Allan Robertson 1930-1948
Otto Fredrick Kraushaar 1948-1967
Marvin Banks Perry, Jr. 1967-1973
Rhoda Mary Dorsey 1973-1974 (Acting); 1974-1994
Judy Jolley Mohraz 1994-2000
Robert Stephen Welch (Acting) 2000-2001
Sanford Jerome Ungar 2001-