Not New York ('twas Las Vegas), But, I read this book a while back, and it was fascinating.
"Beneath the Neon: Life and Death in the Tunnels of Las Vegas"
"Armed with a flashlight, tape recorder, and expandable baton, Las Vegas CityLife writer and editor Matthew O’Brien explored the black-and-gray underworld of the Las Vegas flood-control system for four years.
Beneath the Neon: Life and Death in the Tunnels of Las Vegas chronicles O’Brien’s adventures in subterranean Las Vegas. He follows in the footsteps of a psycho killer. He braces against a raging flood. He parties with naked crackheads. He learns how to make meth, that art is most beautiful where it’s least expected, that in many ways, he prefers underground Las Vegas to aboveground Las Vegas, and that there are no pots of gold under the neon rainbow."