. "No restrictions on access"@en . . "1 sound cassette (74 min.),"@en . "Margaret Garrett, on behalf of the United States Holocaust Memorial Museum, conducted the interview with Wallace Witkowski on September 1, 1998."@en . . "Oral history interview with Wallace Witkowski"@en . "irn506748" . . . . "No restrictions on use"@en . . "1998 September 01" . . "United States Holocaust Memorial Museum"@en .