Complex sentence: The east and west wings (bookstore and commons) are later additions, having been added in 1960 and extensively renovated in the 1990s; the MU was owned by the Memorial Union Corporation until 1965 when it transferred the facility to the State Board of Higher Education.
Split into simpler sentences: The east and west wings (bookstore and commons) are later additions that were added in 1960 and extensively renovated in the 1990s. The MU was owned by the Memorial Union Corporation until 1965 when it transferred the facility to the State Board of Higher Education.