Complex sentence: Eero Saarinen and his Detroit-based firm were commissioned in 1956 to design the TWA Flight Center, which was dedicated May 28th, 1962--a year after the architect's death.
Split into simpler sentences: Eero Saarinen and his Detroit-based firm were commissioned in 1956 to design the TWA Flight Center. The completed terminal was dedicated May 28th, 1962--a year after the architect's death.