This is the episode where Mr Finch claims that he invented social media on behalf of the government in order to collect data on people.
Finch and the female Jordan Hester eat at Robert, a restaurant atop the Museum of Arts and Design at the south corner of Columbus Circle.
The bookstore scene takes place at Rizzoli, which was located on 57th St. between 5th & 6th Avenues for many years before shuttering in 2014; it subsequently relocated to Broadway & 25th Street and re-opened in 2015.
When Harold says, "Can the real Jordan Hester, please stand up?" This is a reference to the game show To Tell the Truth.