The collection covers most aspects of Williams' life and career after 1939. Papers from her work with the British Colonial Service in Ghana, 1928-1936, were largely lost during transit to her next appointment in Singapore, but the typescript copy of her 1935 report The mortality and morbidity of the children of the Gold Coast is extant. Many papers relating to Williams' work with the British Colonial Service in Singapore, 1936-1941, were lost during the Japanese invasion, but she took a few files into Changi jail, where she wrote up the report An experiment in health work in Trengganu in 1940-1941. Notebooks, correspondence and writings made during her internment, when she was appointed as camp nutritionist by her fellow women prisoners, are also in the collection. Post-war papers cover most aspects of Williams' work, including positions with the World Health Organisation, the American University at Beirut and Tulane School of Public Health, as well as correspondence and collected reprints relating to work carried out in 'retirement' at Wyndham House, Oxford.

Papers of Benjamin Robert Haydon, 1826-1846, comprising letters to William Newton, his landlord, 1830-1845, relating to house repairs, his debts, requests for loans, death of his daughter, 1831; legal papers relating to Haydon's imprisonment for debt in the King's Bench, 1830, namely inventory of his goods for debt, authorisation to distrain goods, notice of court hearing; letter from Sir George Philips, 1836, concerning his picture 'Christ's Agony'; receipts for Haydon's life insurance policy payments, 1833-1845; Newton's marked copy of the catalogue of the sale of Haydon's effects, 1846.

Papers of the Ad hoc committee/interdisciplinary working party on the confidential enquiry into perinatal mortality, 1981-1985, comprising correspondence on setting up the meetings, copies of minutes, draft guidelines and comments.

Records of the Royal College of Obstetricians and Gynaecologists' External Affairs Committee, 1932-1950, comprising correspondence and related papers covering a wide variety of issues reflecting the Committee's broad terms of reference, for example: maternity hospitals, midwifery, female circumcision, pregnancy in wartime, maternal mortality and nutrition in pregnancy. It should be noted however, that much of the material included in the series appears to have been placed here in error simply because it relates to the external affairs of the College. As well as containing records of the External Affairs Committee, this fonds also has records related to the general external affairs of the college. Some of these records are concerned with obstetrics and gynaecology during the period of the Second World War.

Records, [1820s]-1984, of the Chadwick Trust. Administrative papers comprise legal papers setting up the Trust, 1890-1896; minute books, 1895-1983; annual reports, 1962-1978; lists of securities, 1914-1917; corrected booklet The Chadwick Trust, 1926-1937; script of a proposed film treatment of Sir Edwin Chadwick, 1958; signing-in book for meetings, 1972-1980. Financial papers comprise account books, 1958-1979; tax claims, 1972-1976; financial files, 1972-1980; correspondence on tax reclaimed, 1980. Papers on lectures given under the auspices of the Trust comprise announcements of lectures, 1913-1935; printed copies of lectures held under the Trust's auspices, 1930-1967, the subjects including public health and buildings, sewerage, nutrition, disease, air quality, training and public health, medical provision, and public health work overseas; other printed lectures and writings, 1896-1932, the subjects including aspects of sanitation, disease, and Sir Edwin Chadwick. Correspondence comprises general correspondence, 1913-1924, 1971-1982; correspondence of the Clerk of the Trust, 1969-1979; correspondence of G M Binnie, 1944-1980; Charity Commission correspondence, 1962-1978; correspondence relating to medals and a memorial prize, 1966-1978; Trustees, 1969-1977; receptions, meetings and lectures, 1970-1978; blue plaque, 1972-1976; costing of activities, 1974; annual reports, 1974-1979; transfer of the Trust to University College London, 1974-1984. Miscellaneous items pertaining to Edwin Chadwick, [1820s]-1889, include his diary [1820s] and patents of his inventions, 1871-1872. Other acquired papers comprise printed ephemera including circulars against inoculation [1914-1918] and undated printed extracts from a hymn on sanitation. Photographs include undated prints of Edwin Chadwick and other eminent scientists; undated slides for a lecture, including various 19th-century public figures, 19th- and 20th-century mortality rates, and various London hospitals; and photographs, 1980, of a plaque to Chadwick at his birthplace in Longsight, Greater Manchester.