The papers consist of notes and notebooks of William Bayliss' experiments. There is also correspondence, press cuttings and photographs, a great part referring to the 'Brown Dog Affair' of 1903 and to other disputes between anti-vivisectionists and University College London.

Papers and correspondence, 1913-1973, of Sir Francis Martin Rouse Walshe. Personal and biographical documents and correspondence, 1913-1965, include certificates and documentation about appointments and honours; photograph of Walshe at Queen Square, 1915; papers, 1915-1920, relating to service in Egypt; papers relating to visits to the USA, 1924-1925, 1959, 1965; caricature of Walshe, 1948; letters of congratulation on Walshe's knighthood, 1953; a manuscript biographical note by Walshe prepared for the journal Brain, 1965; letters containing recollections of Walshe sent by colleagues for a memorial volume, 1973. Drafts and manuscripts of publications, speeches and addresses, some heavily revised and with later annotations and comments by Walshe, date from 1918-1972, and, besides scientific papers, include some publishers' contracts; reviews of Walshe's published works, chiefly Critical Studies in Neurology (1948) and Thoughts upon the Equation of Mind with Brain (1953); and Walshe's earliest discussion of 'miraculism' in medicine, published in the Catholic Medical Guardian, 1938. Manuscripts and printed material relating to various controversies in which Walshe was involved as a leading member of the Roman Catholic medical community include lectures on stigmatization; a letter from Walshe on the duties of lay Catholics; printed works on religious matters, 1926-1938; a memorandum, 1965, correspondence, 1960-1966, and various press cuttings and printed matter on contraception. There is various correspondence, 1922-1927, 1940-1973, some of it scientific, including a postcard to Walshe from J S Haldane, 1921, and copies of correspondence between William B Bean and Walshe, 1950-1973.

Testimonials, obituary notices, photographs, and some miscellaneous papers including a notebook.

A medical notebook complied by Augustus Desiré Waller in the late 19th century with numerous citations from German medical authorities, a list of Waller's own publications, printed papers by him and other printed notices of his experiments.

Ent's papers, c.1641-1685, consist of his Apologia pro Circuitione Sanguinis..., in his hand, thought to be a revision prepared for the second edition of the work, c.1641-1685. The volume also includes the texts of some of Ent's speeches, such as his presidential addresses at the College, 1670-1674, and 1676, and contains some accounts entered by Peter Ent, 1671-1674, who was in possession of the volume for a time; Ent's anatomical lectures, delivered at the College 13-15 April 1665, in his hand, 1665.

Papers of Robert Ferguson, 1821-1864, include his notes on gynaecology and obstetrics, particularly referring to cases, with some diagrams, sketches and watercolour drawings, and including notes for lectures; Notes on various medical subjects relevant to general medical practice, such as childhood diseases and physiology, particularly referring to cases, with some watercolour drawings, including notes and correspondence on the health of Napoleon III, 1856, and including notes for lectures; Notes on philosophy and literature; Addresses given by Ferguson to students; Copies of articles by others on subjects of interest to Ferguson, found amongst his papers.

Original watercolour drawings, 1828-1844, of specimens illustrating Lee's work on the nerves of the heart and uterus, mostly by Joseph Perry. Some illustrations were used in Lee's various publications, especially his Pathological Observations on the Diseases of the Uterus, with Coloured Engravings from Original Drawings by Joseph Perry, Representing the Most Important Organic Diseases of the Uterus (London, 2 parts 1840; 1849), others are unpublished. Many are endorsed with a label identifying the illustration and a note of publication, in Lee's hand.

Sir James Paget's index to references for medical biographies, intended for the Biographical Dictionary of the Society for the Diffusion of Useful Knowledge (1842-44), c.1844.

John Ayrton Paris' annotated copy of 'A memoir on the physiology of the egg', read before the Linnean Society of London, 21 Mar 1809' (London 1810), with two unpublished watercolour drawings by M C Noble interleaved.

Papers of Alexander Peter Buchan, 1799-c 1824, comprising 2 volumes. Volume 1 contains manuscript notes and insertions concerning human longevity. The insertions are from James Easton Human Longevity: recording the name, age, place of residence, and year, of the decease of 1712 persons, who attained a century and upwards from AD 66 to 1799, comprising a period of 1733 years with Anecdotes of the most remarkable (Salisbury and London, 1799). Volume 2 contains a manuscript translation of Mssrs A Seguin and Lavoisier Respiration of Animals (Academy of Sciences, 1789).

Papers of John Howship, 1799-1805, comprising a volume of manuscript notes by Howship, titled John Howship March the 8th 1799, taken at physiological lectures by Matthew Baillie, lectures by William Cruikshank, and including notes on dissections and cases, 1799-1805; a volume of manuscript notes by Howship, titled John Howship October 1799, taken at lectures by William Cruikshank, Sir Everard Home, Mr Crichton, and Mr Wilson, including notes of John Heaviside's cases, 1799-1803; a manuscript copy by Howship, of Matthew Baillie's Morbid Anatomy, including detailed drawings of the plates; and a list titled Mr Howship's Preparations, made by William Augustus Hillman of preparations purchased at Howship's museum and descriptions taken from Howship's catalogue.

The correspondence, papers and scientific notebooks of Sir George Lindor Brown. The majority of notebooks relate to the investigations of Brown and his co-workers (notably Feldberg, Harvey and Maycock) at the National Institute for Medical Research, Hampstead, into neuromuscular transmission. The correspondence and remaining papers cover Brown's administrative work in the decades from the 1950's. His relationships with the Royal Society and the Medical Research Council are well represented. The papers include personal files, correspondence with institutions and individuals, working scientific notes and sets of slides.

The Croonean Lectures on Muscular Motion by Browne Langrish MD, read before the Royal Society in 1747, being a Supplement to the 'Philosophical Transactions' for that year.

Papers of William Sharpey including copy letters, correspondence including from Neil Arnott, George Gabriel Stokes and James Newton Heale and notes by Sharpey, some on Royal Society business.

Correspondence files of the joint meetings to discuss maternity care in the new National Health Service of the Royal College of Obstetricians and Gynaecologists, the Royal College of General Practitioners (RCGP) and the Royal College of Midwives (RCM) Committee, including papers on the background to its establishment, from 1985-1992, including minutes of meetings and publications, particularly RCOG, RCGP & RCM, Maternity Care in the New NHS: A Joint Approach, July 1992.

Presidents' correspondence and copy papers, and final report of the RCOG working party on screening for neural tube defects, 1977-1981.

Correspondence, minutes and the draft report of the Maternity Unit Planning Committee of the Royal College of Obstetricians and Gynaecologists, 1959-1960.

Correspondence, minutes and the final report, 1961-1962, of the Royal College of Obstetricians and Gynaecologists Committee on General Practitioner Maternity Units.

Correspondence and papers relating to the establishment of the RCOG Committee on Human Fertility and records relating to its surveys, questionnaire and report.

Correspondence between the RCOG President, Sir John Peel, and the Simon Population Trust concerning the enquiry into the sterilisation of women; statistical results of the survey; draft and final copies of the subsequent report, 1967-1969.

Correspondence, minutes and final report of the Royal College of Obstetricians and Gynaecologists (RCOG) working party on unplanned pregnancy, 1970-1972.