Twenty-third Street was a street in Manhattan, New York City, that intersected with Fifth Avenue.
In The Big Good-Bye, the master criminal Silent Forrester was chauffeured along this street to Fifth Avenue. His taxi was being tailed by Detective Jim Tierney and his squad. (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 Twenty-third Street was from page 138.