Harper Lee's second novel, "Go Set A Watchman," was released to the public Tuesday. "Watchman" follows Jean Louise "Scout" Finch, the main character of Lee's 1960 novel "To Kill A Mockingbird," who returns to the fictional town of Monroeville, Ala., as an adult. Lee's novel, which has been considered one of the best novels in the country, changed the way many people viewed racial injustice in the American South. Here are 12 more Southern writers who have affected history with their writing.