Hours: Open Tues.-Fri. and holidays 9-5, Sat. 10-5 (historic sites open 11-4), June-Aug.; Mon.-Fri. 9-3 (historic sites only open during special events), Sept. 1-late Sept.; Mon.-Thurs. 10-9, Fri.-Sat. 10-10, late Sept.-late Oct. (historic sites closed). Phone for schedule rest of year. Closed Jan. 1, Thanksgiving and Christmas. Allow 1 hour minimum.