"The Road to Dawn tells the improbable story of Josiah Henson, a slave who spent forty-two years in pre-Civil War bondage in the American South and eventually escaped with his wife and four young children, travelling 600 miles and eventually settling with his family as a free man across the border in Canada. Once there, Henson rescued 118 more slaves and purchased land to build what would become one of the final stops on the Underground Railroad,...