John Rylands Library library became one of the first to collect historical family records. Librarians at John Rylands before its merger include Edward Gordon Duff in 1899 and 1900 and Henry Guppy between 1899 and 1948 (joint Librarian with Duff until 1900). Duff was responsible for the original library catalogue, compiled between 1893 and 1899: "Catalogue of the Printed Books and Manuscripts in the John Rylands Library, Manchester"; ed. E. G. Duff. Manchester: J. E. Cornish, 1899. 3 vols. The cataloguing of the books was done by Alice Margaret Cooke, a graduate of the Victoria University. Dr Guppy began publication of the "Bulletin
Rylands Library Papyrus P52 Stanley Porter, is much narrower than the ranges envisaged by Barker or Nongbri, and implies within their dating schema that formula_1 and formula_1 stand as the earliest New Testament papyri so far identified (although, strangely, at the conclusion of their article, Orsini and Clarysse state that formula_1, formula_1, and formula_1 "probably all [date to] the second half of the second century)." The John Rylands Library states "The first editor dated the Fragment to the first half of the second century (between 100-150 AD). The date was estimated palaeographically, by comparing the handwriting with other manuscripts. However, palaeography is not an