. "Oral history interview with Helena Kubowicz Knapczyk"@en . . . "Ina Navazelskis, on behalf of the United States Holocaust Memorial Museum Oral History Branch, conducted the oral history interview with Helena Kubowicz Knapczyk in Brooklyn, NY on May 10, 2013."@en . "United States Holocaust Memorial Museum"@en . "2 digital files, MPEG-4"@en . "irn59201" . "No restrictions on access"@en . "No restrictions on use"@en . "2013 May 10" . . . . . .