http://lod.ehri-project-test.eu/units/us-005578-irn515814/acquisitions/1 an entity of type: Activity rico:generalDescription The papers were donated to the United States Holocaust Memorial Museum in 2004 by Dr. Zvi Oster, the stepson of Abraham-Avrum Sperber. rdf:type rico:Activity rico:hasActivityType ehri:AcquisitionType data from the linked data cloud