Carol WARREN, Australia
2012 - 2016

Geraldene B. HODELIN, Jamaica
2008 - 2012

Lilha LEE, Republic of Korea
2004 - 2008

Gertraud PICHLER, Austria
2000 - 2004

Nancy L. GRANOVSKY, USA
1996 - 2000

Maria THIELE-WITTIG, Germany
1992 - 1996

Doris R. BADIR, Canada
1988 - 1992

Margaret DALLOWAY, United Kingdom
1984 - 1988

Margaret E. FITCH, USA
1980 - 1984

Monica TUPAY, Austria
1976 - 1980

Isabel HORNE, Australia
1973 - 1976

Mary ROBERTSON, United Kingdom
1973

Leny VOELLMY, Switzerland
1964-1973

Isobel GIBSON, United Kingdom
1958 - 1963

M. de RYCKE-GEERINCKX, Belgium
1954 - 1958

Joseph PILLER, Switzerland
1933 - 1953

Ernest PERRIE, Switzerland
1928 - 1932

George PYTHON, Switzerland
1908 - 1927