I want to know the answer to the following question:
When was the city listed on the National Register of historic Places?
All the background I'm provided with is that "The 19th-century buildings and streetscape of the Old West Side neighborhood have been preserved virtually intact; in 1972, the district was listed on the National Register of Historic Places, and it is further protected by city ordinances and a nonprofit preservation group.". Is that enough to answer the question?
Answer: yes