The Prize doesn't get into Rockefeller's business decisions as much as Titan though. If that's what you're after, Titan is a better choice.

It is meticulously researched, though, and the bibliography is as good a place as any to look for further reading on Rockefeller.

Above and beyond that, simply as a history of the most important substance in all of human history beyond sheer biological necessities, it's utterly fascinating. It's principally through Yergin's work that I came to pretty much diametrically opposite conclusions of the future of energy from his.