A fictional character is featured by the P.L.Travers's third book and last novel in the Mary Poppins series.
Mary Poppins Opens the Door is a British children's fantasy novel by the Australian-British writer P.L. Travers, the third book and last novel in the "Mary Poppins" series that features the magical English nanny Mary Poppins. 
Mary Poppins is a fictional character and the eponymous protagonist of P. L. Travers' "Mary Poppins" books and all of their adaptations. 
