Calvin Thomas
1887-1895
George A. Hench
1895-1899
George Hemp
1899-1900
Max Winkler
1900-1929
John W. Eaton
1929-1934
Henry W. Nordmeyer
1935-1960
Clarence K. Pott
1960-1971
V.C. Hubbs
1971-1976
Claiborne W. Thompson
1976-1979
Roy C. Cowen, Jr.
1979-1985
Robert L. Keyes
1985-1991
Frederick R. Amrine
1991-1992
Robert L. Keyes
1992-1995
Frederick R. Amrine
1995-2004
Geoffrey H. Eley
2004-2007
Helmut Puff
2007 (Acting)
Julia C. Hell
2007-2010
Scott D. Spector
2010-
