Iona Margaret Balfour Opie, and Peter Mason Opie were an English married team of folklorists who applied modern techniques to understanding children's literature and play, in studies such as The Oxford Dictionary of Nursery Rhymes (1951) and The Lore and Language of Schoolchildren (1959). They were also noted anthologists, assembled large collections of children's literature, toys, and games and were regarded as world-famous authorities on children's lore and customs.
