The Filson Historical Society is putting the finishing touches on its $12-million campus expansion project in Old Louisville. To celebrate this major renovation of the Ferguson Mansion, the society is hosting an open house complete with docent-led tours and interpretations, special exhibits and live music including Brigid Kaelin, Johnny Berry & Steve Cooley, Tyrone Cotton, The Derby City Dandies, members of Relic and a concert featuring the music and instruments of the newly-acquired Tom T. and Dixie Hall collection.