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Anchor text: Beverly Sills – beverlysillsonline.com – Biography, Discography, Annals, Pictures, Articles, News

Wikipedia: La fille du régiment

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Wikipedia: Beverly Sills

Wikipedia: Beverly Sills

Anchor text: Complete Beverly Sills performance list

Wikipedia: Le siège de Corinthe

Wikipedia: Estelle Liebling

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Wikipedia: The Shepherd on the Rock

Anchor text: Capobianco in ''Time'' magazine, 22 November 1971, quoted on beverlysillsonline.com

Wikipedia: Tito Capobianco

Anchor text: Beverly Sills - Performance Annals Database

Wikipedia: Thomas Hayward (tenor)

Wikipedia: Heinz Awards

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Wikipedia: American Opera Society