IT is forty-six years since the Oxford Dictionary of Nursery Rhymes was first published. During this time we ourselves made some further discoveries, and many people kindly wrote to us with additions to the histories of the rhymes, sometimes even providing a previously unknown source in, for instance, a medieval manuscript or seventeenth-century play. I would here like to thank all those valuable contributors, and in particular Lawrence Darton, historian of his family's famous firm; Pat Garrett, collector of alphabet books; Cecily Hancock, scholar and musicologist, of Portsmouth, New Hampshire; David Hounslow, student of street cries; Andrea Immel, Curator of the Cotsen Collection at Princeton University; the late Marjorie Moon, bibliographer and collector of children's books; Roy Palmer, who generously shared his wide knowledge of folk songs and ballads; Justin Schiller of New York; and that eminent collector of children's books, Robert Scott. Now that the Dictionary is being reset I am glad to be able to incorporate this important new material. My renewed thanks are due to the courteous and friendly staffs of the British Library and the Bodleian Library, and especially to Clive Hurst and Sylvia Gardner of the Bodleian. I owe a particular debt of gratitude to Brian Alderson, who has checked the work throughout, and has, especially, brought the bibliographical references into line with present-day knowledge.