"Our buildings and very earth trembled" opens Sat., June 29; first talks begin at 1:00; first exhibit tour at 1:30. We especially invite you to come see the exhibit on July 4-- visitors that day will receive a free copy of Sister Betty Ann McNeil's book "Charity Afire: Pennsylvania". All eight days of the exhibit are free and open to the public. See you there! Please telephone to book a tour: 301.447.6041.