A few years ago I picked up a book at the library because of its intriguing cover and title. It was Edward Ball’s Slaves in the Family. I read about Ball’s exploration of his roots, delving deeply into his family’s history as slave owners, discovering the ugly truth in his own backyard, as it were. When I finished reading this devastating portrait of Ball’s own family, it took weeks before I could read anything else. My mind was full of the revelations and secrets he had exposed. Not long after, I was visiting my 93-year-old great-aunt Doris, and we turned to the topic of books. I told her about Ball’s…