"Elja Heifecs collection"@en . . "irn523381" . . . . . . . . "The collection consisting of a two prisoner badges, a commemorative pin, a poster, correspondence, documents, photographs, and sheet music relating to the experiences of Elja Heifecs who was imprisoned in Riga ghetto, Kaiserwald, Muhlgraben, Stutthof, and Buchenwald concentration camps during the Holocaust and in Riga, Latvia, before, during, and after the Holocaust."@en . .