Thanks for all of the input, everyone. I'll definitely check out the places you recommended.
We've started our journey. We arrived in Memphis last night and set up in the campground across from Graceland. Muy swanky for us. We spent the day touring Memphis. We saw Graceland (he LOVED this old dead guy's house - I'm afraid there's shag carpet on his bedroom ceiling in the future). We were going to go to the Civil Rights Museum, but the protester outside (Jacqueline Smith - Google her) made some good points - would Dr. King really want us spending 9 million dollars on a museum in his name in one of the most poverty-ridden cities in the country? We took pics from outside and gave her the money we would have spent on admission. We spend the afternoon on Beale Street, had lunch, and saw the ducks at the Peabody Hotel. My son's new aspirition is to be a Duck Master or a Beale Street Flipper.
Tomorrow we pack up and head West to hunt for diamonds.