Sir Henry Head's papers, 1891-1909, consist of his casebooks of patients with Herpes Zoster, with sketches and photographs, chiefly from Head's work at the London Hospital, 1891-1909, and his casebooks of patients with various diseases, with sketches and charts, from his work at the City of London Hospital for Diseases of the Heart and Lungs, Victoria Park, 1894.

Papers, c1914-1989, of Dame Kathleen Lonsdale.

Biographical material includes correspondence and papers relating to imprisonment in Holloway Prison, with Lonsdale's own accounts of her time there; diaries and personal notebooks, 1946-1969; letters of congratulation on election as Fellow of the Royal Society (1945); various photographs dating from school to her later years.

Papers relating to Lonsdale's teaching and administrative work at University College London include papers on teaching undergraduate and postgraduate courses; significant documentation relating to laboratory personnel, research funding and general university administration; papers relating to the 'Round Table on Peace Studies', which proposed the establishment of a centre for research into international conflict at the University.

Research material, 1924-1970, consists of Royal Institution papers comprising notebooks, one dating from Lonsdale's first period there (1923-1927), correspondence with colleagues such as W H Bragg and J M Robertson, and Lonsdale's notes and drafts for various research topics; correspondence and papers from her University College years covering many different areas of research, including diffuse scattering of X-rays, thermal vibrations in crystals, methonium compounds and urinary calculi (the latter topic particularly well documented and including several case studies), and including a large group of photographs, mostly of X-ray diffraction patterns.

Papers on the preparation of volumes of the International Tables for crystal structure determination from Lonsdale's chairmanship of the Commission on Tables (1948) comprise drafts, notes and correspondence with colleagues and publishers.

Extensive papers relating to publications, lectures and broadcasts include drafts of articles, on subjects including peace and religious issues, also including obituaries and biographical articles on various individuals, books, book reviews, obituaries, and letters to newspapers and magazines, the latter principally on the issue of atomic weapons; general correspondence concerning publications; drafts of lectures, 1945-1970, including ethics and the role of science in society; a large series of lecture notes, 1933-1970; scripts for broadcasts, on topics ranging from crystallography to religion, 1945-1967.

Papers on foreign and domestic travel, 1943-1971, relating to conferences and lectures, on crystallography, science ethics, and work for the Society of Friends, including her visit to China (1955) and her world tour (1965).

Papers relating to organisations, notably the British Association for the Advancement of Science (BAAS) and the International Union of Crystallography (IUCr), including material relating to a number of International Congresses of Crystallography, also papers relating to participation in Pugwash Conferences on World Affairs, 1958-1970, and papers concerning prison reform and the running of Bullwood Hall Borstal, Essex.

Correspondence, 1927-1974, comprises two main sequences, one arranged alphabetically, the other chronologically; 'day files', principally carbons of outgoing correspondence, 1966-1969; a sequence of references and recommendations; also including correspondence relating to Lonsdale's period of imprisonment (1943). Correspondents include scientists such as Max Born, W H Bragg, W L Bragg, E G Cox, Dorothy Hodgkin, Judith Milledge, L C Pauling and A J C Wilson.

Papers of Sir Richard Claverhouse Jebb, 1854-1884, on Greek subjects, mainly notebooks, comprising notes on classical Greek history, 1854, from Jebb's schooldays at St Columba's, chiefly from lectures of the Reverend W Tuckwell of New College, Oxford, whose principal authority was George Grote, the historian of Greece; notes and essays on Greek history, 1869, 1871; draft history of Bulgaria, 1877; diary of a tour of Greece, 1878; draft of a paper on the remains at Hissarlik read to the Hellenic Society, 1882; letter book of 'Modern Greek Correspondence', 1879-1884, containing original letters sent to Jebb, drafts of his replies, and other material including notes on the language and comments on the teaching of archaeology, relating to the foundation of a School at Athens.

Papers, c1897-1949, of Alexander Banks, comprising photographs taken chiefly by Alexander Banks showing groups of missionaries, including the Banks, Hicks and Hodge families, Indian Christians, including the Das family, Hindus and Muslims, local festivals, buildings and views. Also included are copies of circular letters (1900-1902) and letters (1903-1906) from Alexander Banks; his diary (1899-1900); a record of orphanage children in India (1906) including photographs; and publications of the Regions Beyond Missionary Union.