found: Britten, B. The rape of Lucretia [SR] 1981?:labels (Anna Pollak, mezzo-soprano)
found: Purcell, H. Dido and Aeneas [SR] 1956:labels (Anna Pollack, soprano)
found: Kutsch/Riemens, 1987-(Pollak, Anna; b. May 1, 1915, Manchester; mezzo-soprano) Ergänzungsband 1991 (b. May 1, 1912, Manchester)
found: OCLC database, 1-5-94(hdg.: Pollak, Anna, 1912- )
found: New Grove dict. of opera(Pollak, Anna; b. May 1, 1912, Manchester; English mezzo-soprano of Austrian parents)
found: Notes, June 1997:p. 1115 (Pollak, Anna; d. Nov. 28, 1996, at 84, Kent; English mezzo-soprano)