Who was born in 1899 and wrote the book series "Mary Poppins"?
P. L. Travers Pamela Lyndon Travers, OBE ( ; born Helen Lyndon Goff; 9 August 1899 – 23 April 1996) was an Australian-born writer who spent most of her career in England. She is best known for the "Mary Poppins" series of children's books, which feature the magical nanny Mary Poppins.
Robert Louis Stevenson Robert Louis Balfour Stevenson (13 November 1850 – 3 December 1894) was a Scottish novelist, poet, essayist, and travel writer. His most famous works are "Treasure Island", "Kidnapped", "Strange Case of Dr Jekyll and Mr Hyde," and "A Child's Garden of Verses".