Sir, Gone with the Wind is fiction, too, but it is one of the best books ever written about the Souths perspective of the CW. The second book, "Scarlett", is nothing like the first. Margeret Mitchell was one of the best authors ever.
That's just the perspective of part of the South, a small but influential part. For quite a different perspective on the Confederacy, I recommend JS Hurlburt's History of the Rebellion in Bradley County, East Tennessee, a book written in 1866. It details a Confederate reign of terror in an overwhelmingly Unionist county. Widespread extortion of Unionists by reb authorities, hounding old men to death, suppression of "negro preaching" by the authorities and a great description on how the politicians ignored the will of the people of Tennessee and illegally took the state out of the Union are just some of the horrors detailed. Not Gone with the Wind, but it's excellent evidence that the Confederacy and the South are two different things altogether.