A collection of historic writings from the slave-owner-turned-abolitionist sisters portrayed in Sue Monk Kidd's novel The Invention of Wings Sarah and Angelina Grimk 's portrayal in Sue Monk Kidd's latest novel, The Invention of Wings , has brought much-deserved new attention to these inspiring Americans. The first female agents for the American Anti-Slavery Society, the sisters originally rose to prominence after Angelina wrote a rousing letter of...