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Marguerite de Angeli
Marguerite de Angeli (March 14, 1889 – June 16, 1987) was an American writer and illustrator of children's books including the 1950 Newbery Award winning book The Door in the Wall. She wrote and illustrated twenty-eight of her own books, and illustrated more than three dozen books and numerous magazine stories and articles for other authors. https://en.wikipedia.org/wiki/Marguerite_de_Angeli