Fromthe college website...
Mellon Hall
Designed by the California firm of Neutra and Alexander, this building on the lower campus contains the 600-seat Francis Scott Key Auditorium, Conversation Room, music library, and music and laboratory classrooms. The auditorium was named for St. John's most famous alumnus, the building was named for Paul Mellon, a student at St. John's in 1940 and a generous benefactor of the college. The planetarium is named for Theodore R. McKeldin, a former governor of Maryland. President Eisenhower dedicated the complex in 1958. The Mitchell Art Gallery and an administrative wing was added to Mellon Hall in 1988; the wing houses the offices of the president, dean, assistant dean, registrar, communications, Mitchell Art Gallery and several tutor's offices. A two-year, $13.5 million renovation was completed in 2002.