Complex sentence: One of the founders of SDS, Paul Booth was national secretary of the organization when they met and later served in administrative positions with the American Federation of State, County and Municipal Employees, retiring as Executive Assistant to the President.
Split into simpler sentences: One of the founders of SDS, Paul Booth was national secretary of the organization when they met. He later served in administrative positions with the American Federation of State, County and Municipal Employees, retiring as executive assistant to the president.