Tombs was a prison in Manhattan, in New York City.
In The Big Good-Bye, after arresting the master criminal Silent Forrester, Detective Jim Tierney delivered his charge to Tombs. (TNG: "The Big Goodbye")
The pages seen in the episode were from the detective novel, The Listening Man, by author John A. Moroso. This novel was published in 1924. Information on Tombs was from page 130.