. "No restrictions on use"@en . . "irn508777" . "2 videocassettes (VHS), sound, color ; 1/2 in."@en . . . . . "The United States Holocaust Memorial Museum, Oral History Branch, in cooperation with Watchtower Bible and Tract Society, Inc. produced the interview with Hubert Mattischek on May 2, 1990."@en . "Oral history interview with Hubert Mattischek"@en . . . . "No restrictions on access"@en . . "1990 May 02" .