Mon.-Fri. 8-5, Sat.-Sun. and holidays 9-3. Guided tours are given on the hour Mon.-Sat. 10-2, May-Sept.; Sat. 10-2, Oct.-Dec. The Jan.-Apr. tour schedule in even-numbered years is Sat. 10-2; Mon.-Sat. 10-2 in odd-numbered years. Closed Jan. 1, Thanksgiving and Christmas. Phone ahead to confirm schedule. Allow 45 minutes minimum.