CORRECTION: Public viewing hours are Wednesday from 12:00 p.m. to 1:00 p.m. and 6:00 p.m. to 7:00 p.m. until conservation work is finished. Sessions may be called off in the rare event that materials hazardous to our visitors’ health are being used in the conservation process, so please check back here or call us at 215-732-1600 to confirm that this week’s session is stillon.

For up to date information on public viewing hours, please click here.