| Secretary Generals of the International Association | Gustav Rosenberger, Germany | 1963-1969 | | (Chairman of the World Committee) | | | | | | Ray M. Dutcher, USA | 1969-1974 | | (Chairman of the World Committee) | | | | | | David S. Yohn, USA | 1974-1995 | | | | | Max Essex, USA | 1995-1997 | | | | | Rüdiger Hehlmann, Germany | 1997-2009 | | | | | Clara Bloomfield, USA | 2009-2013 | | | | | Giuseppe Saglio, Italy | 2013-2017 |
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