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In page Madeleine L'Engle:

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Since 1976, Wheaton College in Illinois has maintained a special collection of L'Engle's papers, and a variety of other materials, dating back to 1919.[3] The Madeleine L'Engle Collection includes manuscripts for the majority of her published and unpublished works, as well as interviews, photographs, audio and video presentations, and an extensive array of correspondence with both adults and children, including artwork sent to her by children.[citation needed]