| Reference number | Title | Date |
| EC/1925/06 | Jeffreys, Sir Harold: certificate of election to the Royal Society | |
| RR/29/12 | Referee's report by Harold Jeffreys, on a paper 'A general theory of the movements of the earth's crust' by John Joly | January 1923 |
| RR/37/85 | Referee's report by Geoffrey Ingram Taylor, on a paper 'On aerofoils of small thickness' by Harold Jeffreys | August 1928 |
| RR/43/55 | Referee's report by Harold Jeffreys, on a paper 'The wave resistance of an ellipsoid' by Thomas Henry Havelock | March 1931 |
| RR/51/14 | Referee's report by Harold Jeffreys, on a paper 'On the direction of approach of microseismic waves' by A W Lee | [November 1934] |
| RR/43/41 | Referee's report by Harold Jeffreys, on a paper 'On the stability of superposed streams of Fluids of different densities' by S Goldstein | April 1931 |
| RR/44/93 | Referee's report by Harold Jeffreys, on a paper 'The transport of vorticity and heat through fluids in turbulent motion' by Geoffrey Ingram Taylor | April 1931 |
| RR/41/135 | Second referee's report by Leonard Bairstow, on a paper 'The wake in three dimensional fluid flow' by Harold Jeffreys | May 1930 |
| RR/44/117 | Referee's report by Harold Jeffreys, on a paper 'On periodicity in series of related terms' by Gilbert Thomas Walker | February 1931 |
| RR/60/37 | Referee's report by Harold Jeffreys, on a paper 'Atmospheric oscillations' by C L Pekeris | October 1936 |
| RR/44/118 | Second referee's report by Harold Jeffreys, on a paper 'On periodicity in series of related terms' by Gilbert Thomas Walker | March 1931 |
| RR/46/98 | Referee's report by Harold Jeffreys, on a paper 'The characteristics of a deep focus earthquake: a study of the disturbance of February 20, 1931' by F J Scrase | [September 1932] |
| RR/71/279 | Referee's report by Harold Jeffreys, on a paper 'Seismic experiments on the North German explosions, 1946 to 1947' by P L Willmore | 1948 |
| RR/72/47 | Referee's report by Harold Jeffreys, on a paper 'The British submarine gravity surveys of 1938 and 1946' by B C Browne and R I B Cooper | 1949 |
| RR/54/1 | Referee's report by Gerald Ponsonby Lenox-Conyngham, on a paper 'Travel times in seismology' by Harold Jeffreys | 10 July 1935 |
| RR/72/40 | Referee's report by Harold Jeffreys, on a paper 'Observations on the turbulent fluctuations of a tidal current' by K F Bowden and Joseph Proudman | 1949 |
| RR/70/93 | Referee's report by Harold Jeffreys, on a paper 'Some observations of waves and other fluctuations in a tidal current' by K F Dowden [Bowden] | 1947 |
| RR/66/140 | Referee's report by Harold Jeffreys, on a paper 'Borehole temperatures in the Transvaal and Orange Free State' by L J Krige | [August 1939] |
| RR/59/18 | Second referee's report by Harold Jeffreys, on a paper 'Note on surges of voltage and current in transmission lines' by Frederick William Carter | [April 1936] |
| RR/64/71 | Referee's report by George Udny Yule, on a paper 'Significance tests when several degrees of freedom arise simultaneously' by Harold Jeffreys | 17 January 1938 |
| NLB/67/7 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Harold] Jeffreys; St John's College, Cambridge | 27 September 1924 |
| RR/64/69 | Referee's report by Alexander Craig Aitken, on a paper 'Significance tests for continuous departures from suggested distributions of chance' by Harold Jeffreys | [December 1937] |
| RR/72/58 | Letter from Harold Jeffreys, on a paper 'The propagation of a sound pulse in the presence of a semi-infinite open-ended channel' by W Chester to D C Martin, Assistant Secretary of the Royal Society | 20 November 1949 |
| RR/64/70 | Referee's report by George Udny Yule, on a paper 'The law of error and the combination of observations' by Harold Jeffreys | 7 January 1938 |
| RR/66/23 | Referee's report by Harold Jeffreys, on a paper 'Terrestrial heat flow in Great Britain' by A E Benfield | [August 1939] |
| RR/65/146 | Referee's report by Major Greenwood, on a paper 'The posterior probability distributions of the ordinary and intraclass correlation coefficients' by Harold Jeffreys | July 1938 |
| RR/71/62 | Referee's report by Harold Jeffreys, on a paper 'The determination of the masses necessary to produce a given gravitational field' by Edward Crisp Bullard and R I B Cooper | [1948] |
| RR/65/145 | Referee's report by Major Greenwood, on a paper 'The comparison of series of measures when the standard errors are unequal' by Harold Jeffreys | June 1938 |
| RR/72/57 | Referee's report by Harold Jeffreys, on a paper 'The propagation of a sound pulse in the presence of a semi-infinite open-ended channel' by W Chester | 1949 |
| RR/68/235 | Referee's report by James Hopwood Jeans, on a paper 'A derivation of the tidal equations' by Harold Jeffreys | [1942] |
| RR/69/180 | Referee's report by Alexander Craig Aitken, on a paper 'An invariant form for the prior probability in estimation problems' by Harold Jeffreys | 1945 |
| RR/67/332 | Referee's report by Harold Jeffreys, on a paper 'On maintained convective motion in a fluid heated from below' by Anne Pellew and Richard Vynne Southwell | July 1940 |
| RR/70/121 | Referee's report by Harold Jeffreys, on a paper 'Three-dimesnional stress systems in isotropic plates. I' by A E Green | 1947 |
| RR/71/174 | Third referee's report by Harold Jeffreys, on a paper 'Some remarks on integral equations with kernels: L (?1 -x1,..., ?n -xn; a)' by Georg Kreisel | 13 December 1948 |
| RR/69/181 | Referee's report by Edmund Taylor Whittaker, on a paper 'An invariant form for the prior probability in estimation problems' by Harold Jeffreys | 1945 |
| RR/71/74 | Referee's report by Harold Jeffreys, on a paper 'Recent advances in the technique of submarine gravity surveying' by R I B Cooper | [1948] |
| RR/72/51 | Referee's report by Harold Jeffreys, on a paper 'On Heisenberg's elementary theory of turbulence' by Subrahmanyan Chandrasekhar | 1949 |
| NLB/67/257 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Harold] Jeffreys; St John's College, Cambridge | 22 November 1924 |
| RR/39/12 | Referee's report by Harold Jeffreys, on a paper 'Notes on a differential equation which occurs in the two-dimensional motion of a compressible fluid and the associated variational problems' by Harry Bateman | [May 1929] |
| NLB/66/627 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Secretary, Royal Astronomical Society, Burlington House, W.1 | 5 June 1924 |
| NLB/72/387 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Harold] Jeffreys, FRS | 26 September 1929 |
| NLB/72/427 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Harold] Jeffreys, FRS | 15 October 1929 |
| NLB/72/516 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Harold] Jeffreys, FRS | 25 November 1929 |
| IM/GA/WS/3980 | Jeffreys, Sir Harold | nd |
| RR/39/10 | Referee's report by Harold Jeffreys, on a paper 'Microseisms associated with disturbed weather in the Indian seas' by Sudhansu Kumar Banerji | [September 1929] |
| RR/54/2 | Referee's report by James de Graaff-Hunter, on a paper 'Travel times in seismology' by Harold Jeffreys | 17 July 1935 |
| RR/49/11 | Referee's report by Harold Jeffreys, on a paper 'Probability and chance in the theory of statistics' by Maurice Stevenson Bartlett | [March 1933] |
| RR/59/15 | Referee's report by Harold Jeffreys, on a paper 'Note on surges of voltage and current in transmission lines' by Frederick William Carter | [March 1936] |
| RR/64/68 | Referee's report by Alexander Craig Aitken, on a paper 'On the relation between direct and inverse methods in statistics' by Harold Jeffreys | 3 March 1937 |
| NLB/67/710 | Copy letter from unknown correspondent; to unknown correspondent | 19 February 1925 |
| IM/002415 | Jeffreys, Sir Harold | 1992 |
| RR/39/77 | Referee's report by Harold Jeffreys, on a paper 'On the criterion for stability of a layer of viscous fluid heated from below' by A R Low | [June 1929] |
| RR/64/66 | Referee's report by Alexander Craig Aitken, on a paper 'The tests for sampling differences and contingency' by Harold Jeffreys | [August 1937] |
| RR/66/222 | Referee's report by Harold Jeffreys, on a paper 'The propagation of a pulse in the atmosphere' by C L Pekeris | [February 1939] |
| RR/64/67 | Referee's report by Edmund Taylor Whittaker, on a paper 'On the relation between direct and inverse methods in statistics' by Harold Jeffreys | [March 1937] |
| RR/66/40 | Referee's report by Harold Jeffreys, on a paper 'Heat flow in South Africa' by Edward Crisp Bullard | [August 1939] |
| RR/73/37 | Referee's report by Richard Vynne Southwell, on a paper 'Finite strains in an anisotropic elastic continuum' by James Gardner Oldroyd | 14 February 1950 |
| RR/73/38 | Referee's report by Harold Jeffreys, on a paper 'Finite strains in an anisotropic elastic continuum' by James Gardner Oldroyd | February 1950 |
| RR/73/1 | Referee's report by Harold Jeffreys, on a paper 'The theory of axisymmetric turbulence' by Subrahmanyan Chandrasekhar | 1950 |
| RR/73/13 | Referee's report by Harold Jeffreys, on a paper 'The propagation of a sound pulse in the presence of a semi-infinite, open-ended channel. II' by W Chester | 1950 |
| RR/26/69 | Referee's report by Edmund Johnston Garwood, on a paper 'On certain geological effects of the cooling of the earth' by Harold Jeffreys | 23 June 1921 |
| RR/33/11 | Referee's report by Harold Jeffreys, on a paper 'Primary and secondary vortices in oscillating fluids: their connection with skin friction' by (the late) H Ayrton | March 1926 |
| RR/39/13 | Second referee's report by Harold Jeffreys, on a paper 'Notes on a differential equation which occurs in the two-dimensional motion of a compressible fluid and the associated variational problems' by Harry Bateman | [August 1929] |
| RR/41/134 | Referee's report by Leonard Bairstow, on a paper 'The wake in three dimensional fluid flow' by Harold Jeffreys | March 1930 |
| RR/44/11 | Referee's report by Harold Jeffreys, on a paper 'On the groupings and general behaviour of solid particles under the influence of air vibrations in tubes' by Edward Neville Da Costa Andrade | September 1931 |
| RR/45/113 | Referee's report by Edward Arthur Milne, on a paper 'An alternative to the rejection of observations' by Harold Jeffreys | [April 1932] |
| RR/45/115 | Referee's report by Louis Napoleon George Filon, on a paper 'On plasticity and creep in solids' by Harold Jeffreys | 26 July 1932 |
| RR/45/116 | Referee's report by Edmund Taylor Whittaker, on a paper 'On the theory of errors and least squares' by Harold Jeffreys | [August 1932] |
| RR/48/54 | Referee's report by Edmund Taylor Whittaker, on a paper 'Probability, statistics, and the theory of errors' by Harold Jeffreys | [March 1933] |
| RR/57/93 | Referee's report by Harold Jeffreys, on a paper 'On fiducial probability theory' by Maurice Stevenson Bartlett | [October 1936] |
| RR/63/50 | Referee's report by Harold Jeffreys, on a paper 'The Royal Society expedition to Montserrat, B.W.I. Final report' by Cecil Frank Powell | March 1937 |
| RR/67/41 | Referee's report by Harold Jeffreys, on a paper 'Submarine seismic investigations' by Edward Crisp Bullard and T F Gaskell | October 1940 |
| RR/68/91 | Referee's report by Edmund Taylor Whittaker, on a paper 'On the significance tests for the introduction of new functions to represent measures' by Harold Jeffreys | [1941] |
| RR/71/172 | Referee's report by Harold Jeffreys and Frank Smithies, on a paper 'Some remarks on integral equations with kernels: L (?1 -x1,..., ?n -xn; a)' by Georg Kreisel | [1948] |
| RR/71/173 | Second referee's report by Harold Jeffreys and Frank Smithies, on a paper 'Some remarks on integral equations with kernels: L (?1 -x1,..., ?n -xn; a)' by Georg Kreisel | 2 October 1948 |
| RR/73/39 | Letter from Harold Jeffreys, on a paper 'Finite strains in an anisotropic elastic continuum' by James Gardner Oldroyd to, D C Martin, Assistant Secretary of the Royal Society | 24 February 1950 |
| RR/73/53 | Referee's report by Harold Jeffreys, on a paper 'Finite elastic deformation of incompressible isotropic bodies' by Albert Edward Green and R T Shield | 15 March 1950 |
| RR/73/91 | Referee's report by Harold Jeffreys, on a paper 'The decay of axisymmetric turbulence' by Subrahmanyan Chandrasekhar | 19 May 1950 |
| RR/77/223 | Referee's report by Harold Jeffreys, on a paper 'The origins and nature of microseisms in the frequency range 4 to 100 c.p.s.' by C D V Wilson | 24 November 1952 |
| RR/77/224 | Referee's report by Harold Jeffreys, on a paper 'An analysis of the vibrations emitted by some man-made sources of microseisms' by C D V Wilson | 24 November 1952 |
| RR/77/270 | Referee's report by Harold Jeffreys, on a paper 'Dispersion on a sphere' by Sir Ronald Fisher | 19 January 1953 |
| RR/79/6 | Referee's report by Harold Jeffreys, on a paper 'Convection from an isolated heated horizontal cylinder rotating about its axis' by J T Anderson and O A Saunders | 19 January 1953 |
| RR/79/88 | Referee's report by Harold Jeffreys, on a paper 'Note on wind drift in a channel in the presence of tidal currents' by K P Bowden | 1 June 1953 |
| RR/79/257 | Referee's report by Harold Jeffreys, on a paper 'Structure of microseismic waves' by J Darbyshire | 31 October 1953 |
| RR/79/263 | Referee's report by Harold Jeffreys, on a paper 'Wind-effect on the motion of the sea in an infinite channel and in a rectangular gulf' by George Ridsdale Goldsbrough | 1 November 1953 |
| RR/79/297 | Referee's report by Harold Jeffreys, on a paper 'Discrete transitions in turbulent convection' by W V R Malkus | 16 December 1953 |
| RR/79/299 | Referee's report by Harold Jeffreys, on a paper 'The heat transport and spectrum of thermal turbulence' by W V R Malkus | 16 December 1953 |
| RR/75/137 | Referee's report by Harold Jeffreys, on a paper 'Some gravity wave problems in the motion of perfect liquids. General introduction and Parts I-V' by J C Martin, W J Moyce, William George Penney, A T Price and C K Thornhill | 21 July 1951 |
| RR/75/176 | Referee's report by Harold Jeffreys, on a paper 'Further observations of the turbulent fluctuations in a tidal current' by K F Bowden and L A Fairbairn | 21 July 1951 |
| RR/75/180 | Referee's report by Harold Jeffreys, on a paper 'The evaluation of zeros of high degree polynomials' by F W J Olver | 24 September 1951 |
| RR/75/267 | Referee's report by Harold Jeffreys, on a paper 'The accuracy of Rayleigh's method of calculating the natural frequencies of vibrating systems' by George Frederick James Temple | 11 October 1951 |
| RR/75/289 | Referee's report by Harold Jeffreys, on a paper 'Seismic refraction shooting in an area of the eastern Atlantic' by Maurice Neville Hill | 24 December 1951 |
| RR/75/334 | Referee's report by Harold Jeffreys, on a paper 'The disturbance due to a line-source in a semi-infinite elastic medium with a single surface layer' by Margery Newlands | 15 January 1952 |
| RR/77/67 | Referee's report by Harold Jeffreys, on a paper 'A determination of the frictional forces in a tidal current' by K F Bowden and L A Fairbairn | 3 May 1952 |
| RR/77/77 | Referee's report by Harold Jeffreys, on a paper 'The generation of waves by wind' by J Darbyshire | 4 May 1952 |
| MC/35/88 | Letter from Harold Jeffreys, Meteorological Office, South Kensington, London, to the Royal Society | 18 April 1921 |