"2 videocassettes (U-Matic), sound, color ; 3/4 in."@en . . . . "Restrictions on use"@en . "No restrictions on access"@en . . "irn512020" . "Richard J. Prystowsky on behalf of the Anti-Defamation League, Orange County, California, conducted the interview with Helena Leefsma on February 7, 1993. The United States Holocaust Memorial Museum received the copy of the interview from the Anti-Defamation League, Orange County, California on May 3, 2000."@en . . . . . "Orange County California Anti-Defamation League"@en . "1993 February 07" . "Oral history interview with Helena Leefsma"@en .