Jane Klinger, chief conservator, Conservation Services, opens a case in the Personal Artifacts Vault at the U.S. Holocaust Memorial Museum's David and Fela Shapell Family Collections, Conservation and Research Center in Bowie, Md., Monday, April 24, 2017. The Shapell Center is a new state-of-the-art facility that will house the collection of record of the Holocaust. (AP Photo/Carolyn Kaster)