Papers of Paul Belloni du Chaillu, 1864, comprise route notes, astronomical observations and calculations, Gabon, 1864; letter from Acra, 25 Aug 1863 and letter from Fernand-Vaz, 7 April 1864 reporting on journey to, and residence on, Fernand-Vaz river and library MSS letters, chiefly of a personal nature, to Sir George Black during the years 1848-1878.

Papers of Professor John Stodart Kennedy, 1915-1993, comprising biographical and autobiographical papers, 1915-1992, including Kennedy's autobiographical notes, family and personal papers, diaries;
papers relating to research, 1939-1992, documenting most stages of his scientific career from the 1930s, including wartime service; his periods at Cambridge, Imperial College and Oxford, categorised alphabetically by topic including aphids, behaviour/behaviourism, ethology, locusts, mosquitoes and motivation; photographs and observations in Albania, 1939; drafts and exchanges of ideas for his book of 1992;
papers and correspondence relating to Imperial College, 1963-1987; papers relating to lectures, papers and broadcasts, 1935-1987; publications, 1939-1992; societies and organisations, 1937-1991, including the Anti-Locust Research Centre; scientific and general correspondence, 1937-1992, with friends and colleagues such as Donald Livingston Gunn, Vincent Brian Wigglesworth, many overseas correspondents including scientific exchanges; papers relating to references and recommendations, 1954-1991, including correspondence with editors, authors and publishing houses; photographs, 1942-1985, notably of the work of the Middle East Anti-Locust Unit, 1942-1944, wind-tunnels, group photographs of meetings and symposia.

Papers of Sir Patrick Linstead, 1916-1968 (presented by Lady Linstead), comprising biographical papers, 1916-1968, including certificates of honours and awards, letters of congratulation, non-scientific writings, desk diaries whilst Rector of Imperial College, 1955-1966; notebooks and working papers, [1920]-1963, comprising notebooks of students days, early work at Imperial College, research at Harvard, research at Imperial College from 1949; drafts and manuscripts for lectures and publications, 1947-1966, (some of which are not listed in the official bibliography); papers relating to Linstead's work as consultant and service on committees, including his Chairmanship of the British Association Study Group on the education of the graduate scientist, 1938-1960; correspondence, 1948-[1966];

papers relating to his Rectorship of Imperial College, 1954-1967, comprising biographical and obituary notices, 1966-1967; appointment as Rector, 1954-1955; speeches, addresses and lectures, 1956-1966; papers and correspondence relating to the Committee on management and control of research and development, 1958-1962, Committee on Higher Education, 1961-1964; correspondence relating to the London School of Economics Court of Governors, 1960-1965, Science Masters' Association, 1961-1963, Association for Science Education, 1964-1965; papers relating to visits, 1955-1957, including to European universities and institutions; correspondence, 1954-1966, notably concerning the Consort Club, 1957-1962, academic salaries, 1959, with Harold Johann Thomas Ellingham, [1954-1965], John Frederick Wolfenden, [1954-1965], dinner in hall, 1955-1958, proposed International Institute of Science and Technology, 1961-1963; correspondence concerning Linstead Memorial, 1966-1968; papers concerning a visit to India, 1963-1964; Congress of the Universities of the Commonwealth visit to Imperial College, 1963; proposed International Institute of Science and Technology, 1961-1963.

Papers of Professor James Dwyer McGee, 1937-1979, comprising biographical information; lectures and correspondence, 1954-1979, notably with Patrick Maynard Stuart Blackett, 1955-1972, concerning Imperial College Physics Department and Anglo-Australian Observatory; Bertram Vivian Bowden, 1955-1963, concerning research work and workers; Carnegie Institute of Washington, 1960-1977, concerning McGee's Associateship, research grant; Denis Gabor, 1956-1972; Merle Walker, concerning the installation of a Spectracon, 1962-1979; Imperial College Rectors, 1955-1971; papers relating to Imperial College Physics Department, 1954-1972; papers relating to the Institute of Electrical Engineers, 1954-1968; Institute of Physics, 1965-1976; observatories in Britain and abroad, 1962-1975, including the Royal Greenwich Observatory; Royal Society, 1956-1972, notably concerning grants.

Papers of Professor Raphael Meldola, [1866-1907], comprising notes on experiments in qualitative analysis at the Royal College of Chemistry, [1866]; physical lectures by Dr Tyndall, [1867]; course on physics by Dr Guthrie, 1873; notes as a Demonstrator at Science Schools, 1877-1878; research notes, 1879, 1900; diary of eclipse expedition, 1875; lecture notes on organic chemistry, 1885-1890, including coal tar products, 1890; laboratory notes, 1904-1906; correspondence concerning the portrait fund for Sir John Evans, 1899-1900; Perkin Memorial Fund, 1906-1907, including letters from several German chemists; correspondence about a Maccabeans Dinner, 1905; general correspondence, 1862-1915; correspondence concerning a memorial for Herbert Spencer, 1904-1908; and a memorial for James Sylvester, 1897-1900; correspondence on the subject of thinnings in Epping Forest, 1894-1895; a scientific autograph collection, 1864-1907; plus additional autographs and press cuttings 1889-1915.

Minutes of Visitations of the Royal Observatory Greenwich, together with relevant extracts from the Minutes of the Council of the Royal Society.

Letters of Nevil Maskelyne on astronomy.

Letters and papers about the affairs of the Greenwich Observatory in the eighteenth and early nineteenth centuries.

Agreements for printing and publishing the international catalogue of scientific literature between the Royal Society and Messrs Harrison and Sons, 1901-1911.

Leaflet accompanied by 52 original photographs (portraits) taken during the visit to the Rutherford High Energy Laboratory on 29 October 1971 as part of the Royal Society celebrations of the Rutherford centenary, 29 October 1971.

Reports on scientific papers submitted for publication to the Royal Society from 1832 to date (Peer Review). The referees were appointed to advise the Committee of Papers, and were drawn from appropriate subject disciplines within the Fellowship. Referees Reports vary in content between terse notes recommending acceptance or rejection to long monographs devoted to the subject under review. Much of their interest derives from the comment of one scientist on the work of another, for example Michael Faraday on J P Joule (RR.3.154,158) or Sir Oliver Lodge on Ernest Rutherford (RR.13.106).