Transcriptions of source material and notes by Douglas on Elizabethan and Stuart journalism, [1935-1954], mainly comprising typed transcriptions of newspapers, pamphlets and similar sources of news, 1566-1622, with associated notes and references by Collins, and including typescript of 'Elizabethan journalism, 1590-1610' by Collins; manuscript and typescript introduction, table of contents and bibliography of A Handlist of News Pamphlets, 1590-1610 (Walthamstow South-West Essex Technical College and School of Art, London, 1943) by Collins; file of correspondence with archivists (mainly at Essex Country Record Office, the Bodleian Library and Chester City Record Office), concerning sources of Elizabethan and Stuart journalism and pamphlets, 1948-1954, with a manuscript copy of an interim report on the subject, [1949]; notebook containing research on the early modern postal service; manuscript notes on Sixteenth Century French news pamphlets and related material, including research undertaken on Collins' behalf by Robert J North, with covering letters from North to Collins, 1934.

Collection comprises correspondence with Philip Hammersley Leathes, manuscript papers, diaries, devotionals, dictionaries and pedigree rolls, title deeds and indentures, printed books and pamphlets, catalogues and the manuscripts of the architect, John Carter, [1350-1863]. Notably including correspondence from George Nayler of the College of Arms and Nicholas Carlisle, Secretary of the Society of Antiquaries, relating to publications of the Society, discoveries of antique brass plate, and the exchange of manuscripts between antiquaries, [1790-1838]; loose manuscript papers collected by Leathes, describing ornamentation in early printed devotionals, a fictional narrative entitled 'The amorous Jill: A tale', narrative of the Lisbon earthquake of 1755, notes relating to the observation of comets, including the comet of 1811, copies of charters of the reigns of Edward IV and Henry VII, papers relating to the Portland Vase, British Museum, fragments describing inscription on newly discovered brass plate, 1747-1829; pedigree rolls tracing the lineage of the English Crown, [1450, 1762]; manuscript volumes including collection of biblical extracts, liturgical handbook, autograph book with colour illustrations, antiquarian ephemera such as funeral memorials, armorials and the creation of nobles, volume by Francis Harrison entitled, 'The elements of navigation' with colour charts, tables and illustrations, dictionaries of Celtic and Saxon words, notes on the teaching of mathematics, commonplace book drawing on ancient and modern authors, manuscript diary including progress of architectural tour of Europe; title deeds and indentures for families in Nottingham, Southampton, London and Hungerford, residency certificates in Buckinghamshire and Northamptonshire, 1650-1751; printed books and pamphlets on the subjects of antiquarianism, genealogy and architecture, 1778-1853; manuscripts of John Carter, architect, acquired at his death in 1817 by his executor, Leathes, notably including autobiographical notebooks by Carter describing architectural subjects and tours, commonplace book, correspondence with Leathes, loose notes on linguistics and the ships of the Russia Company, obituaries of Carter and sale catalogue from his estate, 1700-1818; manuscript catalogues and display captions relating to the Leathes' papers, King's College London, 1819, 1837.

Draft and notes, [1914-1938], for a history of English public finance from the later medieval period to the Stuarts, mostly abstracted from sources at the former Public Record Office, London (now The National Archives). Notes, [1914-1938], on various topics, notably economic aspects of New Zealand, 1836-1845, Senegal and Gambia, 1737-1804, trade on the Gold Coast, Africa, 1750-1800, and the functions of the Board of Trade, 1744-1807.

Four letters, 1913-1920, to George Charles Williamson, author of Lady Anne Clifford, Countess of Dorset, Pembroke and Montgomery, 1590-1676: her life, letters and work (T Wilson & Son, Kendal, 1922), mainly concerning Round's opinion on the relevance of a volume containing an Elizabethan peerage to the Clifford peerage claim.

Academic papers of Patrick Wormald, including texts of published and unpublished research notes and writings, lectures, drafts of books and articles created by Patrick Wormald, 1968-2004; notably including handwritten notes from research undertaken by Wormald from study of Anglo-Saxon manuscripts or taken from public lectures attended by Wormald on lawsuits, government, post-Roman Britain and pre-Conquest England and the Celtic Church; rough draft chapters on 'continental legislation' covering the Franks and Carolingians; lectures on Bede, Beowulf, King Alfred, Gregory of Tours, Cnut, 1971-1984; copies of drafts of The Making of English Law , research notes and follow-up, 1989-1995; correspondence with publishers, 1983-2003; bibliographies, essay questions, seminar and course outlines from Glasgow and Oxford, 1977-1988; newspaper cuttings - mainly book reviews, 1977-1987.