Over the course of more than twenty years, James D. Richardson and his wife, Lori, retraced the steps of his ancestor, George Richardson (1824-1911), across nine states, uncovering letters, diaries, and more memoirs hidden away. Their journey brought them to the brink of the racial divide in America, revealing how his great-great-grandfather Richardson played a role in the Underground Railroad, served as a chaplain to a Black Union regiment in...