Meanwhile the special exhibition hall and museum had the original key to the Bastille, which used to hang in the hallway of Mt. Vernon--as well as lots of other stuff from the mansion. It sort of is a shame, but at least it was possible to look at them, because after standing for hours in line to see the mansion and slowly creep through it, not too many people stayed to look at the museum, which is a treasure trove.
The Lafayette show is just great, and worth the trip. Most of all for the insight that Lafayette convinced Washington to free all his slaves upon the death of Martha--the only Founding Father to free his laborers. Also worth seeing: George Washington's stables, sword and his suit--he was really tall, looked good on a horse, for sure. The Mt. Vernon Ladies Association did a great job restoring outbuildings and former slave quarters. Shame about the house, though...