Herbert Riedel July 2022 - Present
Liang Chee Wee Oct. 2011 - July 2022
Penelope Wills July 2004 - July 2011
Robert Denson July 1998 - Oct. 2003
Donald Roby July 1990 - June 1998
Ronald Hutkin April 1987 - March 1990
Clyde Kramer April 1979 - Sept. 1986
Charles Joss July 1975 - Sept. 1978
Max Clark May 1966 - July 1975
