Complex sentence: In 1977, Hartman-Cox Architects began a major renovation of the building, adding a second, more modern reading room dedicated as the Theodora Sedgwick Bond-William Ross Bond Memorial Reading Room in 1982.
Split into simpler sentences: In 1977, Hartman-Cox Architects began a major renovation of the building. A second, more modern reading room dedicated as the Theodora Sedgwick Bond-William Ross Bond Memorial Reading Room was completed in 1982.