Rosenbach Museum in Philadelphia. Along with the regular Sendak collection, there will be a Wild rumpus on March 24th and 25th. The activities and exhibit will focus on three of Maurice Sendak's books: Outside, Over There, Brundibar, and The Sign On Rosie's Door. Don't miss this opportunity to view the sketches and dummies. Get a rare glimpse of the making of a classic picture book by a master of the craft.