Read 'Oil!", by Upton Sinclair. It's not only extremely good but is the novel that the critically acclaimed film "There Will Be Blood", starring Daniel Day-Lewis was based on. If you are also interested in the movie, look for the collectors edition and on the inside fold-out there is a passage from the book, and in the movie that passage is portrayed nearly word for word. It's really cool how books and films go hand in hand like that sometimes!