Herald Square was a square located on Earth in New York City, New York. The square was located north of Times Square on Upper Broadway. During New Year's Day celebrations, hundreds of celebrants would gather here to welcome in the New Year.
In The Big Good-Bye, on one New Year's Eve, Barney Kollecher, a police officer, had his fellow officers posted at this location. They were to keep the peace, and arrest petty criminals and bullies. (TNG: "The Big Goodbye")
The pages seen in the episode were actually from the detective novel, The Listening Man, by author John A. Moroso. This novel was published in 1924. Information on Herald Square was from page 178.