I was hoping for a MUCH better book. Written in 1981, it was largely the history of the NY, Paris and UK systems. Two chapters at the end are devoted to other subway systems. I enjoyed the details and especially the description of the diplomacy necessary to make early subways work in the United States and in Paris. There was too much details in places, not enough in others. It was reissued 10 years later newly subtitled “Subways in History, Myth, Art, Technology, and War” and I suspect the research involved in it was someone’s thesis and the firs tittle just wasn’t a good fit.