Eternal Vigilance is the price of Good Unionism

Past Presidents

• Honorary S.I.E.S. – President   Efrain Diaz S.I.E.S. – President, 2014-18 Gilbert Medina S.I.E.S. – President, 2011-14 Pedro Besonia  S.I.E.S. – President, 2006-11 Antonio Abreu  (view biography) S.I.E.S. – President, 2004-06 Eddie Vega S.I.E.S. – President, 2001-04 Benjamin Arana (view biography) S.I.E.S. – President, 1997-01 Humberto J. Restrepo (view biography) S.I.E.S. – President, 1996-97 Augusto Suarez S.I.E.S. – President, 1991-96 Luis G. Restrepo (view biography) S.I.E.S. – President, 1985-91 Edwin Lopez (view biography) S.I.E.S. – President, 1984-85 Ray Soriano

  S.I.E.S. – President, 1981-83  Thomas Arroyo S.I.E.S. – President, 1979-81 Frank Torres S.I.E.S. – President, 1976-78 Salomon Maldonado (view biography) S.I.E.S. – President, 1973-76 Felix Crespo (view biography) S.I.E.S. – President, 1970-73 Alex Hirsh S.I.E.S. – President, 1969-70 Antonio Flores S.I.E.S. – President, 1960-68 Jose Lopez (view biography) S.I.E.S. – President, 1958-60 Paul Sanche