Subway Lives by Jim Dwyer 1991.
"Graffiti wars, murder, childbirth, and ritualistic chicken sacrifice--it all happens on the New York subway if you watch long enough. Dwyer follows several typical New Yorkers in one composite day as they travel on the great electrified machine that keeps the Big Apple humming 24 hours a day."
Subway lives tells the story of JA and his beef with Soni and Slick U5 (RIP). There are many other writers mentioned in this book also, Reas, Ven, Sane, Smith, Audi, Cocer etc. Here are some excerpts to give you a taste of whats covered. You don't hear this one mentioned too much maybe because its text and not pictures but its definitely one for the collectors.