Underneath New YorkEveryone wonders what goes on down a manhole. This book explores the mysteries beneath New York City's streets, telling the story of hidden pipes and cables and how they are kept in order. It might be called a Sidewalk Superintendent's Guide, but it is much more than that. It is a vivid account of a city in action. The author received the generous cooperation of the engineering personnel of the public utilities and the municipal departments of the