Noel G. Thomas (1975-1974)
Louis L. Sirois (1974-1973)
W. M. Williams (1973-1972) deceased
Daniel E. Pickett (1972-1971) deceased
T. Raymond Meadowcroft (1971-1970)
James Gordon Parr (1970-1969) deceased
W.M. Armstrong (1969-1968)
André Hone (1968-1967) deceased