When Frederic Bartholdi unveiled his colossal Statue of Liberty in 1886, New Yorkers wanted to know who the masculine looking diva was that reigned over their city. Was she his mother? His wife? His mistress, perhaps? Like Leonardo Da Vinci, Bartholdi was a member of a secretive brotherhood. Both men coded and hid privileged knowledge in their masterpieces. Although Bartholdi took the secret of Lady Liberty's identity to his grave, he hid...