By Bruce Chadwick. Per one of the blurbs, "a Dickensian picture of a corrupt, violent, and lawless antebellum New York City." Not the phrase I thought he was going to end with, tbh, and there's another law-enforcement descriptor you could just as easily use, but enough of my ACAB editorializing: this hardcover is new from the warehouse.
(The jacket took a little damage in transit therefrom, so I knocked a little off the SRP.)