This is a great book about the energy development in the United States. As the US started building more cars then the need for petroleum grew. As new methods of using fuel developed, then new supplies for those uses were needed, and new supply lines needed to be laid.The book does a good job paralleling the developments around the world with each year of energy development in the US. The book stops in the 1970s. If you are not interested in energy production in the US then skip the book, but if you are curious how it all started and got developed then the book is a good read.