Complex sentence: One included building is the Mary Fisk Stoughton House, which is separately listed, and the Cambridge Historical Society's offices, which are in the NRHP-listed Hooper-Lee Nichols House, located at 159 Brattle Street.
Split into simpler sentences: One included building is the Mary Fisk Stoughton House, which is separately listed on the NRHP. The Cambridge Historical Society's offices are in the NRHP-listed Hooper-Lee Nichols House, located at 159 Brattle Street.