The Old Exchange and Provost Dungeon in Charleston, South Carolina, is one of the great buildings of Colonial America. Serving as city hall, customs house, post office and prison; as the British Headquarters during the occupation of Charles Towne and then host to a great ball honoring George Washington, the Exchange has been an eyewitness to America's history. This stoic building--designated a National Historic Landmark in 1975--has been described...