Complex sentence: The firm continued to win many awards for their work such as awards from the American Institute of Architects for the Carolina Coliseum in 1970 and the U.S. Post Office in Florence, South Carolina, 1976.
Split into simpler sentences: The firm continued to win many awards for their work. They received awards from the American Institute of Architects for the Carolina Coliseum in 1970 and the U.S. Post Office in Florence, South Carolina, 1976.