What building was added to the National Register of Historic Places at the same time as the oldest building on Monument Square?
McCarthy Building (Troy, New York):  In 1970 it was added to the National Register of Historic Places in 1970, along with the nearby Cannon Building. Cannon Building (Troy, New York):  It is the oldest building on Monument Square. Cannon Building (Troy, New York):  In 1970 it was listed on the National Register of Historic Places.
i don't know