Fred G. Stearns
July 1951 to April 1955
John F. Tobin
April 1955 to December 1955
Ross H. Green
December 1955 to April 1957
John W. Trout, Jr.
April 1957 to October 1960
Marvin Huddleston
November 1960 to April 1967
Fred Ryan
April 1967 to April 1968
Paul Evans
May 1968 to April 1975
Bob Schock
April 1975 to April 1977
Marvin Huddleston
April 1977 to April 1979
Glenn O. Crum
April 1979 to April 1985
Marvin Huddleston
April 1985 to April 1993
Tom Lindsay
April 1993 to October 1996
Tim Norton
November 1996 to December 2000
Bruce Armstrong
December 2000 –
Ken Hampton
April 2009 – April 2013
Bruce Armstrong
April 2013 –