"'What have I to fear? My master broke every promise to me. I lost my beloved wife and our dear children. All, sold South. Neither my time nor my body is mine. The breath of life is all I have to lose. And bondage is suffocating me.' Henry Brown wrote that long before he came to be known as Box; he 'entered the world a slave.' He was put to work as a child and passed down from one generation to the next -- as property. When he was an adult, his wife...