Andy Warhol actually appeared prominently in the book and one of the most interesting insights was how much the largest dealers actively worked to make his work valuable in the years after his death.
But though they are a major part of the book, Boom is about the dealers and gallerists, not the artists. And it provided a nice, reasonably in depth, chronological history of major galleries (mostly American, mostly beginning in New York City), beginning just after World War II and continuing up until very nearly the present day.
Of course, the present day, this time of plague, feels so different, so even 2019 can feel like a different world. But, for at least some perspective, the sections on how major economic downturns affected the art market provides possible the best view on how it will emerge from… whatever this is.