United States Holocaust Memorial Museum Collection, Gift of Yitka Kilian-Dvirka Funding Note: The cataloging of this collection has been supported by a grant from the Conference on Jewish Material Claims Against Germany. Yitka Kilian-Dvirka found the items among her mother’s belongings following her death in Czechoslovakia in 1982. She donated the Leder collection to the United States Holocaust Memorial Museum in 1993.