. "Nathan Beyrak conducted the interview with Otto Lingfelder in Israel on October 22, 1991, for the Israel Documentation Project. The United States Holocaust Memorial Museum Archives received the tapes of the interview by transfer from the United States Holocaust Memorial Museum Oral History Dept. in February1995."@en . . . "No restrictions on access"@en . . . "2 videocassettes (U-Matic), sound, color ; 3/4 in."@en . . "irn502772" . "United States Holocaust Memorial Museum"@en . . . . "1991 October 22" . "Oral history interview with Otto Lingfelder"@en . "No restrictions on use"@en . .