The records of King's College London Library consist of committee minutes, correspondence, memoranda and other papers, 1830-1998. These include the principal Library Committee minutes and correspondence , 1871-1994; Library Resources Co-ordinating Committee (LRCC) minutes and papers, 1974-1993; Library Services Management Team papers, 1990-1994; minutes of the Strand Campus Users Committee, 1987-1990; minutes, correspondence, reports and memoranda concerning the strategic planning and general policy of the Library including Library Reports, 1987-1990, quinquennia, the University Grants Committee, building, mergers, individual campus libraries committee minutes and overall Library aims and objectives, 1925-1994; papers relating to grants, expenditure and finance, including invoices, 1933-1993; general papers concerning the day-to-day management of the Library including constituent libraries, Second World War disruption, security issues, noise, user/reader services, information retrieval and cataloguing, rare books and Special Collections, policy on periodical subscription, binding and repair, interlibrary loans, publicity and relations with the Students' Union, 1932-1995; correspondence with departments, faculties and schools concerning accessioning policies, 1934-1992; register of borrowers, 1845-1854, 1962-1968, and general correspondence with readers, 1946-1993; papers relating to Library equipment including automation, 1986-1992; papers on building and planning, including the Library Planning and Accommodation Sub-committee, notes on Strand libraries, Cornwall House, Manresa Road, Chelsea, and Hampstead sites, 1948-1993; papers relating to staff and staffing levels, including lists, appointments, appraisals, questionnaires, staff meeting minutes and establishment papers, 1933-1997; individual personnel records of Library staff, 1957-1998; manuscript and typescript Library catalogues and shelf lists, including the Marsden Library, 1830-1993; papers relating to stock, including stock checks and transfers, 1989-1994, accessions registers, 1847, 1932-1975, correspondence and registers of gifts and bequests, including the private papers of academics, 1898-1992, indexes to journals and serials, 1931-[1963]; 1986-1992; papers of Hedwig Pollock, rare book librarian, 1943-1967, including professional correspondence, detailed descriptions of very rare books and manuscript texts and some fragments from a 16th century volume; papers relating to the Liddell Hart Centre for Military Archives and Library, including correspondence with Trustees, minutes of the Trustees and external funding, 1959-1996; interlibrary co-operation and computerised data collection and librarianship including the Standing Conference of Librarians of Libraries of the University of London, Consortium of University Research Libraries (CURL), British Library Research and Development Department, Monitoring and Assessment Research Centre (MARC), Arts and Humanities Data Service (AHDS), European Union Trans-European Mobility Scheme for University Studies (TEMPUS) and Standing Conference of National and University Libraries (SCONUL), 1955-1998.

Records, 1868-1911, of King's College School, including annual lists of pupils and amounts paid for books, 1868-1896, and indexes of books in use [late 19th century] (Ref: KS/LI); papers on the removal of the School to Wimbledon, 1897; cash accounts for Trustees meetings, 1897-1900; correspondence on raising funds for the School, 1902-1903; correspondence on the financial consequences of severance of the School from King's College London, 1905-1906; applications for the headmastership, 1906; correspondence on a proposal for a pupils' boarding house in Wimbledon, 1909-1910; correspondence and papers on School affairs including transfer of the School from King's College London, financial affairs, the new governing body, and applications for the headmastership, 1909-1911 (Ref: KS/F).

Records of King's College Hospital, 1562-1999, comprising the governing and management bodies' and sub-committees' minutes and papers, 1839-1976; files of senior administrative staff including the Hospital Secretary, House Governor and District Administrator, 1853-1990; title deeds and other legal documents, 1562-[1970]; registers, indexes and inventories, 1879-1980; Medical School papers, 1833-1997, including the Medical Society/Listerian Society, the Clubs and Societies Union, and the Medical School Library; private papers of several professors, 1834-1988, including Albert Carless, Arthur Edmunds, Sir (Harold Arthur) Thomas Fairbank, and Herbert Willoughby Lyle; case notes, 1820-1959; ephemera, 1742-1998, including programmes for ceremonies and events, Hospital serials and publications, appeals and publicity, photographs and press cuttings; minutes and annual reports of the Friends of King's College Hospital, 1955-1988; Hospital accounts, 1961-1981; records of the Thrombosis Research Unit, [1972-1996]; records of the Nightingale Institute, 1813-1999.

Papers, 1891-1960, including an alphabetical index of private pupils of Willoughby Lyle, 1891-1901; manuscript summary of the career of Katherine Henrietta Monk, Matron, King's College Hospital, submitted to Lyle by Alice Little, Sister, King's College Hospital, 1939; obituaries mainly from The Lancet , of Philip Franklin, otolaryngologist, John Alexander Drake, Physician for Diseases of the Skin, King's College Hospital, Francis Henry Mosse, medical missionary, and others, 1926-1952; pamphlet biography of William Frederick Danvers Smith, 2nd Viscount Hambleden, comprising obituaries and memorials from a number of newspapers and an address at his funeral at Remenham Church, 1928; a brief biography by Lyle of Professor Robert Bentley Todd, Physician to King's College Hospital, [1928].