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2. Ayres, Brenda and Sarah E. Maier. A Vindication of the Redhead: The Typology of Red Hair in the Literary and Visual Arts. Basingstoke: Palgrave, 2021.
3. Bly, Nellie. Ten Days in a Madhouse. New York: Ian L. Munro, 1877. https://digital.library.upenn.edu/women/bly/madhouse/madhouse.html.
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