2008 - 2009
2006 - 2007
2003 - 2005
2000 - 2003
1997 - 2000
1994 - 1997
1991 - 1994
1988 - 1991
1985 - 1988
1982 - 1985
1979 - 1982
1976 - 1979
1973 - 1976
1970 - 1973
1967 - 1970
1964 - 1967
1961 - 1964
1958 - 1961
1955 - 1958
1951 - 1955

G. Walter Canonica, Italy
Michael A. Kaliner, United States
Carlos E. Baena-Cagnani, Argentina
Allen P. Kaplan, United States
S.G.O. Johansson, Sweden
Albert K. Oehling, Spain
Terumasa Miyamoto, Japan
Jacques P. Charpin, France
Alain L. De Weck, Switzerland
Jack Pepys, United Kingdom
Carl E. Arbesman, United States
Enrique Mathov, Argentina
Tiuzi Sindo, Japan
Max Samter, United States
Umberto Serafini, Italy
Bram Rose, Canada
Carlos Jiminez Diaz, Spain
Bernard M. Halpern, France
Samuel M. Feinberg, United States
Fred Wittich, United States