Eighty years ago, Elliot Bobo was taken from his alcoholic father's home, given a small cardboard suitcase, and put on board an "orphan train" bound for Arkansas. Bobo never saw his father again. He was one of tens of thousands of neglected and orphaned children who roamed the streets of New York in search of money, food, and shelter. Beginning in 1853 a young minister named Charles Loring Brace founded the Children's Aid Society-an organization that...