Standard Oil. It's a bit long-winded, but I recently read and would recommend "Titan: The Life of John D. Rockefeller, Sr.". That you don't know what business

Standard Oil. It's a bit long-winded, but I recently read and would recommend "Titan: The Life of John D. Rockefeller, Sr.". That you don't know what business Rockefeller was in would please him greatly beyond the grave. The man went to great lengths to obscure his business activities, and there was a concerted effort late in his life and by his descendants to ensure that people remembered the family for their charitable activities, and not the business activities that precipitated the largest anti-trust action in history.