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"In April 2010, a Swiss scholar named Peter Otto Büttner, uncovered a book written in 1830 by German author Hermann Adam von Kamp entitled Adelaide: The Girl from the Alps (German: Adelaide, das Mädchen vom Alpengebirge).[1] The two stories share many similarities in plotline and imagery.[2] Spyri's biographer Regine Schindler said it was entirely possible that Spyri may have been familiar with the story, as she grew up in a literate household with many books.[citation needed]
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