Includes [D1] letters and papers on the controversy with Dr George Mossman, whom Hailstone had accused of republicanism, [D2] personal papers, and [D3] miscellaneous papers. [D4] consists of letters and papers of John Hardy, to whom Hailstone was apprenticed, including two letters from John Carr (architect). [D5] contains Hailstone's non-family correspondence, briefly calendared, and [D6] family correspondence, uncalendared. [D7] contains papers of Hailstone's executors after his death, and [D8] papers of his children, including a natural history notebook of his son, Samuel (1812-46). [D9] has various 18th-century wills and legal documents, mostly deriving from Hailstone's legal practice.