Visits and conferences, is slight. It includes a little material for visits to the USA in 1950-1951, 1964, 1967 and 1972 and Singapore and Japan in 1971. Best documented, though still very sparsely, is the world trip which Jeffreys and Lady Jeffreys made in 1959 including New Zealand, Australia, Singapore and India. There is a good photographic record of many visits in Section H
Societies and organisations, is not extensive. Only five British and international bodies are represented. Of considerable biographical interest are the correspondence and papers relating to the founding in 1918 of the National Union of Scientific Workers (Association of Scientific Workers from 1927). Jeffreys was a member of the original executive committee. Also of some significance are papers relating to the British National Committee for Geodesy and Geophysics, especially its Seismology SubCommittee, 1956-1973.
The documentation comprises notebooks, manuscript working, data, drafts, correspondence and off-prints. The earliest material is a group of nine small notebooks used by Jeffreys for natural history notes, 1902-1915. There are also significant components relating to probability and statistics, and seismology, especially the later work in collaboration with R.S. Sidhu, M. Gogna and M. Shimshoni. Additionally, at the end of the alphabetical sequence, there is a small group of miscellaneous papers, including manuscripts by C.G. Darwin, and drafts relating to theses supervised by Jeffreys: V.S. Huzubazar in respect of statistics (1949) and E.P. Arnold in respect of the revision of seismological tables (1965).
Jeffreys's major books are represented including The Earth (1924), especially the sixth edition (1976), Methods of Mathematical Physics (1946) (with Bertha Swirles Jeffreys) and the Collected Works (1971-1977) edited by Jeffreys and Lady Jeffreys. There may be drafts, manuscript working, agreements and correspondence with publishers, correspondence with colleagues, proofs, reviews and royalty statements. Lady Jeffreys may appear as a correspondent, especially in respect of the Collected Works. There is a separate sequence of material relating to shorter publications which includes, in addition to a number of Jeffreys's scientific papers, his Royal Society memoir of Robert Stoneley and his obituaries of Ebenezer Cunningham for St John's College Cambridge and Nature. Also presented in this section is a chronological sequence (not complete) of Jeffreys's off-prints, 1910-1988.
Non-textual material is of major importance both for documenting in photographs Jeffreys's life and career and his interest in photography which developed at an early age. There are photographs of 'Harold's Youth', portrait photographs, photographs at various award ceremonies and with Lady Jeffreys, colleagues and friends and photographs taken on visits and at conferences. Jeffreys's role as a photographer is represented, for example, by a number of photograph albums made up of photographs taken by him in the first decades of the twentieth century. A wide variety of persons and places are depicted. Fellow scientists include F.C. Bartlett, Arthur Holmes, F.G. Hopkins, R. Stoneley, G.I. Taylor and D.M. Wrinch and places include many in the North East of England and in and around Cambridge including St John's College. An album is devoted to a visit to Canada in 1924 in connexion with a British Association for the Advancement of Science meeting. Jeffreys's later photography is represented by an extensive collection of transparencies, many depicting the round the world tour made by Sir Harold and Lady Jeffreys in 1959. Additionally there are recordings of Jeffreys in conversation with colleagues, a sound recording with G.A. Barnard and a video recording with D.V. Lindley. Here are also included Jeffreys's medals.
Covers the period 1945-1982 including a number of undated drafts. It is chiefly the contents of two folders of 'Occasional lectures' and 'Various addresses'. Topics include probability theory, seismology, continental drift, Cambridge mathematics and the psychological significance of death duties
Presented in a number of sequences: scientific correspondence arranged alphabetically by correspondent and covering the period 1922-1995, a chronological sequence of shorter correspondence, 1914-1995, and a small group of references and recommendations, 1957-1984. There is significant correspondence and related material with colleagues and collaborators such as R.A. Lyttleton and M. Shimshoni and individual items or brief exchanges with major figures of an earlier generation such as A.S. Eddington and Ernest Rutherford. Correspondence after Jeffreys's death in 1989 is with Lady Jeffreys who may also appear as a correspondent before that date. Lady Jeffreys actively sought to assemble Jeffreys's correspondence from a variety of sources including colleagues and their families. For example, Desmond King-Hele passed to Lady Jeffreys his correspondence with Jeffreys, 1961-1989, and Dorothy Stoneley gave to her Jeffreys's letters to Robert Stoneley, including undated letters, probably from the 1920s and 1930s. Almost all the K.E. Bullen and R.A. Fisher correspondence with Jeffreys presented here is photocopied material made available by academic archives in Australia, the Universities of Sydney and Adelaide, respectively
Includes obituaries and tributes, biographical notes by Jeffreys himself and transcriptions of interviews conducted by colleagues (see also Section H). There is career, honours and awards material spanning his whole life from birth certificate to his death including letters of condolence received by Lady Jeffreys. There is significant early material, for example, correspondence with St John's College tutors, 1909-1910, Jeffreys's notes of lectures by H.F. Baker, Ebenezer Cunningham and A.S. Eddington, 1911-1914, 'Letters from Johnians 1917', including M.H.A. Newman, records of Jeffreys's period with the Meteorological Office, 1917-1922, including copy of a reference from its director Sir Napier Shaw, and Jeffreys's memorandum on the constitution of the Senate at Cambridge, 1921, addressed to the Royal Commission on the Universities of Oxford and Cambridge. His appointment as Plumian Professor in 1946 and later honours, including 70th and 90th birthday celebrations, are documented. There is a little material relating to Jeffreys's father, 1886-1947, and a sequence of family and personal correspondence, 1917-1992, which reflects his continuing interest and connexions with the North East of England where he was born. Miscellaneous biographical items include a sketch book, possibly dating from Jeffreys's school days, a few letters relating to Jeffreys's early interests in photography and botany, including a letter from William Bateson, 1915, a collection of old railway tickets, Jeffreys's passports and a significant accumulation of travel literature.