David A. Gantz - President | United States of America | January 1988 - December 1993 |
Enrique Ponce y Carbo - Vice President | Ecuador | January 1989 - December 1994 |
José Ajuricaba Da Costa e Silva | Brazil | January 1990 - December 1995 |
José Enrique Rojas Franco | Costa Rica | January 1991 - December 1996 |
Carlos Balsa D'Agosto | Uruguay | January 1992 - December 1997 |
Alejandro Tinoco | Venezuela | January 1993 - December 1998 |