Rumina Velshi (2018–2023)
Dr. Michael Binder (2008–2018)
Linda J. Keen (2001–2008)
Dr. Agnes Bishop (1994–2001)
René J. A. Lévesque (1987–1993)
Jon H. Jennekens (1978–1987)
Alan T. Prince (1975–1978)
Donald G. Hurst (1970–1974)
George C. Laurence (1961–1970)
Chalmers J. MacKenzie (1948–1961)
Andrew McNaughton (1946–1948)
