At the death of her husband in 1906, Mary Muhlenberg Emery (1844-1927) became one of the richest women in the United States. Recognizing her vast responsibility, she embarked on a philanthropic program that endowed or initiated children's programs, hospitals and medical institutions, orphanages, colleges and universities, an art museum, a zoological park, various cultural agencies, and other causes that benefited humankind. Mary Emery's most costly...