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a rico:Activity ;
rico:generalDescription "Most of the materials were found on and taken by William Ornstein from the premises of the Nazi concentration camp of Mauthausen after that camp's liberation. These materials were used by Ornstein as evidence in Nazi war crimes trials. After his death, his housekeeper, Felicja Olszewska, retained his papers for safekeeping. After Fay Brooks and other remaining members of Ornstein's family consulted, the papers were donated to the United States Holocaust Memorial Museum in Sept. 1993."@en ;
rico:hasActivityType ehri:AcquisitionType .