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This postcard features an illustration titled “The Wild Rumpus” from the book “Where the Wild Things Are” by Maurice Sendak. The illustration is done in pencil, pen, ink, and watercolor. It is part of the Maurice Sendak Collection, which includes over 3000 drawings for book illustration. The postcard is sold by The Rosenbach Museum & Library, a place that houses rare books, manuscripts, prints, drawings, paintings, and antique furnishings in a 19th-century townhouse located at 2010 DeLancey Place, Philadelphia 19103.