. "2 sound cassettes (90 min.),"@en . . . "irn509146" . . . . . "Oral history interview with Gertrude Kupfer"@en . "Kevin Wayne, of the United States Holocaust Memorial Museum ID Card Project, conducted the interview with Gertrude Kupfer on January 22, 1992."@en . "United States Holocaust Memorial Museum"@en . "No restrictions on access"@en . "1992 January 22" . "No restrictions on use"@en .