Complex sentence: Nicholas was employed by GTE-Sylvania, 1949-1967, and served as supervisor of personnel, he was then elected a city councilor in Peabody, Massachusetts from 1958-1965.
Split into simpler sentences: Nicholas was employed by GTE-Sylvania, 1949-1967, and served as supervisor of personnel. He was then elected a city councilor in Peabody, Massachusetts from 1958-1965.