Chocolate Wars Inside the Secret Worlds by Joel G. Brenner
Forrest Mars was one of the most private and successful entrepreneurs in America. An autocrat, with unconventional management strategies, he built one of the world's most innovative companies - a $10 billion a year empire, shrouded in secrecy. The day after he died of natural causes a Mars spokesperson refused even to admit that the founder had worked for the firm. Milton Hershey was a dreamer who wanted to create not just a company but an industrial paradise. After making an immense fortune his company is now controlled by a charitable trust whose profits fund the wealthiest orphanage in the world.