Trivia: General Robert E. Lee was shown throughout the movie as wearing the three star insignia of a Colonel, rather than the three stars surrounded by a wreath as was the proper insignia for all Confederate generals. General Lee actually wore this throughout most if not all of the war, and this is accurate.
Trivia: When Isabel is setting up chairs at the poetry reading and is confronted by Tellman, you can see copies of "Le Divorce" by Diane Johnson on the bookshelf behind them.