Two did it the old-fashioned way, drilling holes deep in the earth. One did it with his mind. The fourth did it with a fountain pen. If Texas Oil had a Mount Rushmore, their faces would adorn it. A good ol’ boy. A scold. A genius. A bigamist. Known in their heyday as the Big Four, they became the founders of the greatest Texas family fortunes, headstrong adventurers who rose from nowhere to take turns being acclaimed America’s wealthiest man.
