| RefNo | Title | Date |
| EC/1905/14 | Strutt, Robert John: certificate of election to the Royal Society | |
| HWT/33/2 | H W Thompson's personal correspondence as Foreign Secretary | January - June 1966 |
| NLB/66/32 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir William [Henry] Bragg, FRS | 12 February 1924 |
| IM/007141 | Group photograph | 1911 |
| IM/004432 | Strutt, Robert John, 4th Baron Rayleigh | nd |
| NLB/63/645 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 23 November 1922 |
| IM/004431 | Strutt, Robert John, 4th Baron Rayleigh | 1999 |
| NLB/32/663 | Copy letter from Robert William Frederick Harrison, to [Messrs Harrison & Sons] | 2 May 1906 |
| NLB/23/2/33 | Copy letter from Sir Michael Foster, to The Honorable Robert John Strutt, Fellow of the Royal Society | 5 March 1901 |
| NLB/64/453 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 17 April 1923 |
| RR/15/112 | Referee's report by William Thomson, Lord Kelvin on a paper 'The conducitivity of gases under the becquerel rays' by Robert John Strutt, Lord Rayleigh | January 1901 |
| RR/17/307 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'The emission and transmission of Rontgen rays' by George William Clarkson Kaye | July 1908 |
| NLB/65 | New Letter Book volume 65, copy letters sent from Royal Society administration | 12 July 1923-31 January 1924 |
| RR/16/346 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Newtons Rings formed by metallic reflection' by Richard C Maclaurin | October 1905 |
| RR/16/361 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The pressure of explosions: experiments on solid and gaseous explosives' by Joseph Ernest Petavel | 19 September 1905 |
| MDA/A/22/8 | Copy letter from [Ronald Winckworth] Assistant Secretary of the Royal Society to Lord Rayleigh [John William Strutt] | 12 May 1934 |
| RR/16/313 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Colours in metal glasses, and in metallic films & metallic solutions. II.' by J C Maxwell Garnett | 5 June 1906 |
| NLB/20/100 | Copy letter from an unknown correspondent, to Messrs Harrison & Sons, St Martin's Lane | 31 January 1900 |
| NLB/19/678 | Copy letter from Arthur William Rucker, to Robert John Strutt, [Fellow of the Royal Society] | 21 November 1899 |
| NLB/22/58 | Copy letter from Robert William Frederick Harrison, to Lord Rayleigh [Robert John Strutt], Fellow of the Royal Society | 25 February 1901 |
| NLB/29/27 | Copy telegram from Joseph Larmor, to Robert John Strutt, Terling Place, Witham | [June 1904] |
| NLB/29/35 | Copy letter from Robert William Frederick Harrison, to The Honorable Robert John Strutt, Fellow of the Royal Society | 21 June 1904 |
| NLB/38/272 | Copy letter from Robert William Frederick Harrison, to The Honorable Robert John Strutt, Fellow of the Royal Society | 8 July 1908 |
| NLB/58/412 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Robert John Strutt, FRS | 3 May 1920 |
| NLB/30/288 | Copy letter from Robert William Frederick Harrison, to the Honorable Robert John Strutt, [Fellow of the Royal Society] | [28 February 1905] |
| NLB/30/282 | Copy letter from Robert William Frederick Harrison, to Honourable Robert John Strutt, [Fellow of the Royal Society] | 24 February 1905 |
| NLB/32/474 | Copy letter from Robert William Frederick Harrison, to Robert John Strutt, Fellow of the Royal Society | 16 March 1906 |
| NLB/42/398 | Copy letter from Robert William Frederick Harrison to Messrs Harrison & Sons | 4 June 1910 |
| NLB/35/567 | Copy letter from Joseph Larmor, to the Honorable Robert John Strutt, Fellow of the Royal Society | 14 June 1907 |
| NLB/38/396 | Copy letter from Robert William Frederick Harrison, to The Honorable Robert John Strutt, Fellow of the Royal Society, Sunnyside, Cambridge | 29 July 1908 |
| NLB/41/293 | Copy letter from Robert William Frederick Harrison, to The Honourable Robert John Strutt, Fellow of the Royal Society | 15 November 1909 |
| NLB/63/759 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh, FRS | 11 December 1922 |
| NLB/45/611 | Copy letter from Robert William Frederick Harrison to the Hon. R [Robert] J [John] Strutt FRS | 12 April 1912 |
| NLB/44/62 | Copy letter from Robert William Frederick Harrison to Professor The Honourable R [Robert] J [John] Strutt FRS | 1 May 1911 |
| NLB/44/97 | Copy letter from Robert William Frederick Harrison to Professor The Honourable R [Robert] J [John] Strutt FRS | 3 May 1911 |
| NLB/43/562 | Copy letter from Robert William Frederick Harrison, to The Honourable Robert John Strutt, Fellow of the Royal Society | 11 February 1911 |
| NLB/44/538 | Copy letter from Robert William Frederick Harrison to Professor the Honourable R [Robert] J [John] Strutt FRS | 31 July 1911 |
| NLB/46/121 | Copy letter from Robert William Frederick Harrison, to Professor the Honourable Robert John Strutt, Fellow of the Royal Society | 12 June 1912 |
| NLB/45/610 | Copy letter from Robert William Frederick Harrison to the Hon. R [Robert] J [John] Strutt FRS | 12 April 1912 |
| NLB/45/651 | Copy letter from Robert William Frederick Harrison to Professor the Hon R [Robert] J [John] Strutt FRS | 19 April 1912 |
| NLB/45/767 | Copy letter from Robert William Frederick Harrison to Professor the Hon. R [Robert] J [John] Strutt FRS | 4 May 1912 |
| NLB/46/674 | Copy letter from Robert William Frederick Harrison, to The Honorable Robert John Strutt, Fellow of the Royal Society | 15 October 1912 |
| NLB/63/290 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 03 August 1922 |
| NLB/10 | New Letter Book volume 10, copy letters sent from Royal Society administration | 17 August 1894-1 April 1895 |
| NLB/63/320 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Right Honourable, Lord Rayleigh, FRS | 22 August 1922 |
| NLB/48/307 | Copy letter from Robert William Frederick Harrison, to The Honourable [Robert John] Strutt, Fellow of the Royal Society | 13 June 1913 |
| NLB/51/224 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Robert John Strutt FRS | 16 January 1915 |
| NLB/50/700 | Copy letter from Robert William Frederick Harrison, to The Honourable [Robert John] Strutt, Fellow of the Royal Society | 15 October 1914 |
| NLB/51/151 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to the Honourable Robert John Strutt FRS | 21 December 1914 |
| NLB/51/747 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to the Honourable Robert John Strutt FRS | 16 June 1915 |
| NLB/56/211 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [Robert John] Strutt, FRS | 17 December 1918 |
| RR/17/55 | Referee's report by Robert John Strutt, 4th Baron Rayleigh, and additional letter to Joseph Larmor, on a paper 'On retardation of the discharge of an electroscope by means of certain radio-active ad other substances' by Walter Sydney Lazarus-Barlow | 30 March 1906 |
| NLB/52/752 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor the Honorary Robert John Strutt, FRS | 22 February 1916 |
| RR/18/166 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'Note on the iridescent colours of birds and insects' by Henry Reginald Arnulph Mallock | October 1911 |
| NLB/52/763 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to The Honorary Robert John Strutt, FRS | 24 February 1916 |
| RR/29/29 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The photometric matching field' by L C Martin | June 1923 |
| NLB/52/750 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Harrison & Sons | 22 February 1916 |
| RR/18/185 | Referee's report by Robert John Strutt, on a paper 'On the anode and cathode spectra of various gases and vapours' by G Stead | March 1911 |
| RR/21/97 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the ionization produced by gas reactions' by S J Kalandyk | [June 1914] |
| NLB/62/561 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 10 March 1922 |
| NLB/54/122 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 13 February 1917 |
| NLB/54/282 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [Hugh Longbourne] Callendar, Chairman of the Physics and Chemistry Committee and FRS | 21 March 1917 |
| RR/27/112 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the fluorescence of aesculin' by John Cunningham McLennan and F M Cale | August 1922 |
| RR/25/40 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The absorption of X-rays' by E A Owen | [April 1918] |
| RR/21/157 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'An application of electrolytically produced luminosity, forming a step towards telectroscopy' by L H Walter | [May 1914] |
| RR/27/128 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The molecular scattering of light in vapours and in liquids and its relation to the opalescence observed in the critical state' by K R Ramanathan | July 1922 |
| RR/24/87 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The theory of decay in radioactive luminous compounds' by J W T Walsh | [May 1917] |
| NLB/54/723 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [Robert John] Strutt, FRS | 22 August 1917 |
| MS/928/6/2/31 | Letter from Robert John Strutt, 4th Baron Rayleigh, Terling Place, Chelmsford, Essex, to Geoffrey Vernon Boys | 7 September 1944 |
| RR/27/100 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Pleochroic haloes of various geological ages' by John Joly | December 1922 |
| RR/27/91 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'An investigation of the colour vision of 527 students by the Rayleigh test' by R A Houstoun | August 1922 |
| RR/28/28 | Referee's report by Robert Strutt, Lord Rayleigh, on a paper 'The influence of frequency of current on the electrical ignition of gases' by William Mandell Thornton | [1922] |
| RR/26/127 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'A superior limit to the age of the earth's crust' by Henry Norris Russell | [1921] |
| RR/31/63 | Referee's report by Robert Strutt, Lord Rayleigh, on a paper 'On the effect of temperature on the anomalous reflection of silver' by M de Selincourt | [November 1924] |
| NLB/63/800 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh, FRS | 20 December 1922 |
| RR/27/111 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the absorption of wavelength = 5460.97 A. by luminous mercury vapour' by John Cunningham McLennan, D S Ainslie and F M Cale | July 1922 |
| NLB/56/480 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [Robert John] Strutt, FRS | 20 February 1919 |
| RR/33/79 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Investigations on gaseous explosions. Part I' by William Edward Garner and S W Saunders | April 1926 |
| RR/18/186 | Referee's report by William Jackson Pope, on an unnamed paper by Robert John Strutt | 20 March 1911 |
| NLB/56/586 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to the Honorary [Robert John] Strutt, FRS | 21 March 1919 |
| RR/9/128 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the changes which take place in the deviations the standard compass in the iron armour-plated, iron, and composite-built ships of the Royal Navy, on a considerable change of magnetic latitude' by Ettrick William Creak | 13 April 1883 |
| RR/23/43 | Referee's report by Lord Rayleigh, on a paper 'A theory of colour vision' by R A Houstoun | April 1916 |
| NLB/56/844 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to The Honorary [Robert John] Strutt, FRS | 13 June 1919 |
| NLB/66/698 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 20 June 1924 |
| NLB/58/115 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 16 March 1920 |
| RR/40/62 | Referee's report by Herbert Jackson, on a paper 'The iridescent colours of birds and insects' by Robert John Strutt, Lord Rayleigh | June 1930 |
| RR/18/41 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The distribution of velocity in the ß-rays from a radioactive substance' by J A Gray | May 1910 |
| MS/928/4/1/20 | Letter from Robert John Strutt, 4th Baron Rayleigh, Terling Place, Chelmsford, Essex, to Mrs G V Boys, St Mary Bourne, Andover, Hampshire | 2 August 1945 |
| NLB/68/306 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 16 June 1925 |
| RR/38/119 | Referee's report by Alfred Fowler, on a paper 'Observations on the band spectra of mercury' by Robert John Strutt, Lord Rayleigh | May 1928 |
| NLB/63/291 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Lord Rayleigh, FRS | 04 August 1922 |
| RR/32/51 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'The effect of infra-red radiation upon the rate of combustion of inflmmable gaseous mixtures' by W T David | April 1925 |
| NLB/66/664 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 16 June 1924 |
| RR/17/373 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The elastic limits of iron and steel under cyclical variations of stress' by Leonard Bairstow | 15 June 1909 |
| NLB/59/16 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 10 July 1920 |
| NLB/60/48 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 4 December 1920 |
| NLB/55/110 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to The Lord Rayleigh, O.M., Chairman of the Physics War (Sectional) Committee and FRS | 07 December 1917 |
| RR/52/86 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Fluorescent radiation from N2O' by P K Sen Gupta | May 1934 |
| NLB/63/184 | Copy letter from unknown correspondent; to Lord Rayleigh, FRS | 11 July 1922 |
| RR/34/77 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the densities of particles in smokes' by Hubert Sutton Patterson and Robert Whyltlaw Gray | [October 1926] |
| RR/38/83 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The adsorption of hydrogen on the surface of an electrodeless discharge tube' by M C Johnson | February 1929 |
| NLB/63/512 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 02 November 1922 |
| NLB/61/728 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 19 October 1921 |
| RR/41/14 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The green flash at sunset' by T Y Baker | 24 June 1930 |
| MS/928/6/2/17 | Letter from Robert John Strutt, 4th Baron Rayleigh, 69 Cadogan Square, to Charles Vernon Boys | 20 March 1935 |
| NLB/59/703 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 4 November 1920 |
| RR/50/106 | Referee's report by Geoffrey Ingram Taylor, on a paper 'The bending of marble' by Robert John Strutt, Lord Rayleigh | December 1933 |
| NLB/62/682 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 6 April 1922 |
| RR/17/330 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'The perception of the direction of sound' by Charles Samuel Myers and Harold Albert Wilson | January 1908 |
| RR/40/64 | Referee's report by John Cunningham McLennan, on a paper 'Absolute intensity of the aurora line in the night sky, and the number of atomic transitions required to maintain it' by Robert John Strutt, Lord Rayleigh | 1930 |
| RR/36/49 | Referee's report by Alfred Fowler, on a paper 'Studies on the mercury band-spectrum of long duration' by Robert John Strutt, 4th Baron Rayleigh | nd [1927] |
| RR/32/108 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The structure of molecules in relation to their optical anisotropy.—Part II—Benzene and cyclohexane' by K R Ramanathan | September 1925 |
| NLB/60/199 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 22 December 1920 |
| RR/14/240 | Referee's report by Joseph John Thomson, on a paper 'On the least potential difference required to produce discharge through various gases' by Robert John Strutt, 4th Baron Rayleigh | 21 October 1899 |
| RR/15/111 | Referee's report by Joseph John Thomson, on a papet 'The conductivity of gases under the becquerel rays' by Robert John Strutt, Lord Rayleigh | January 1901 |
| RR/21/122 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Attempts to produce the rare gases by electric discharge' by Thomas Ralph Merton | [1914] |
| RR/18/101 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'The decrease of velocity of the ß-particles on passing through matter' by William Wilson | May 1910 |
| NLB/65/269 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh [Robert John Strutt], FRS | 1 October 1923 |
| NLB/60/637 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 8 March 1921 |
| RR/17/15 | Referee's report by Robert John Strutt, 4th Baron Rayleigh, on a paper 'On a mineral chich retards the rate of discharge of an electroscope' by E H Büchner | [April 1906] |
| NLB/60/504 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to the the Lord Rayleigh [Robert John Strutt], FRS | 16 February 1921 |
| NLB/62/833 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 17 May 1922 |
| RR/46/72 | Referee's report by Herbert Jackson, on a paper 'On a large scale crystalline structure in certain glasses of exceptional composition' by Robert John Strutt, 4th Baron Rayleigh | [May 1932] |
| NLB/65/77 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 24 July 1923 |
| NLB/58/822 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 23 June 1920 |
| NLB/57/12 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor RJ [Robert John] Strutt, FRS | 30 June 1919 |
| NLB/60/786 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 6 April 1921 |
| RR/54/95 | Referee's report by Alfred Fowler, on a paper 'The dark interval in mercury fluorescence' by Robert John Strutt, Lord Rayleigh | 1934 |
| NLB/62/897 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 31 May 1922 |
| RR/50/107 | Referee's report by James Chadwick, on a paper 'Beryllium and helium. I.—The helium contained in beryls of varied geological age' by Robert John Strutt, Lord Rayleigh | July 1933 |
| NLB/62/57 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 24 November 1921 |
| NLB/59/887 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 25 November 1920 |
| NLB/63/433 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 13 October 1922 |
| NLB/60/93 | Copy letter from David Prain, Treasurer and Vice President of the Royal Society; to the Lord Rayleigj, FRS | 10 December 1920 |
| RR/53/89 | Referee's report by Robert John Strutt, 4th Baron Rayleigh, on a paper 'Spectrum of the afterglow of sulphur dioxide' by Alfred Gordon Gaydon | [June 1934] |
| RR/55/58 | Referee's report by Robert John Stutt, Lord Rayleigh, on a paper 'The diffusion of hydrogen through copper' by E O Braaten and G F Clark | July 1935 |
| NLB/64/420 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 10 April 1923 |
| RR/65/44 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Optical thickness of the transition layer between transparent media' by H D Bruce | January 1939 |
| RR/38/116 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'The production of new radiations by light scattering. Part I' by Chandrasekhara Venkata Raman and Kariamanikkam Srinivasa Krishnan | August 1928 |
| NLB/61/907 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 11 November 1921 |
| NLB/62/2 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 12 November 1921 |
| RR/56/93 | Referee's report by William Lawrence Bragg, on a paper 'Note on the oxygen afterglow' by Robert John Strutt, 4th Baron Rayleigh | [March 1935] |
| NLB/64/144 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 8 February 1923 |
| NLB/62/834 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 18 May 1922 |
| NLB/63/350 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh, FRS | 27 September 1922 |
| NLB/63/469 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh, FRS | 24 October 1922 |
| NLB/64/51 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 23 January 1923 |
| NLB/62/542 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 3 March 1922 |
| NLB/55/615 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to The [Honourable Robert John] Strutt, FRS | 26 June 1918 |
| NLB/62/341 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 27 January 1922 |
| NLB/62/722 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 12 April 1922 |
| NLB/62/409 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 10 February 1922 |
| NLB/62/402 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 9 February 1922 |
| NLB/62/477 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 21 February 1922 |
| RR/63/60 | Referee's report by Robert Whytlaw-Gray, on a paper 'An attempt to detect the passage of helium through a crystal lattice at high temperatures' by Robert John Strutt, Lord Rayleigh | 29 September 1937 |
| RR/65/26 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Photographic sensitivity and the reciprocity law at low temperatures' by W F Berg and Kurt Alfred Georg Mendelssohn | June 1938 |
| NLB/62/556 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 9 March 1922 |
| NLB/62/672 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 4 April 1922 |
| NLB/62/575 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 15 March 1922 |
| RR/70/237 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Interference studies of diamond faces. A crossed fringe technique' by Samuel Tolansky and W L Wilcock | 19 February 1947 |
| NLB/62/603 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 21 March 1922 |
| NLB/62/700 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 7 April 1922 |
| NLB/63/207 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 17 July 1922 |
| NLB/57/53 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to [Robert John Strutt] the Lord Rayleigh, FRS | 8 July 1919 |
| NLB/62/714 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 10 April 1922 |
| NLB/63/372 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh, FRS | 04 October 1922 |
| RR/65/222 | Referee's report by Francis William Aston, on a paper 'Nitrogen, argon and neon in the earth’s crust with applications to cosmology' by Robert John Strutt, Lord Rayleigh | February 1939 |
| NLB/64/450 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 14 April 1923 |
| RR/65/233 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The refraction and dispersion of air and dispersion of air for the visible spectrum' by J E Sears and H Barrell | June 1938 |
| NLB/63/412 | Copy letter from unknown correspondent; to Lord Rayleigh, FRS | 09 October 1922 |
| NLB/62 | New Letter Book volume 62, copy letters sent from Royal Society administration | 11 November 1921-10 June 1922 |
| NLB/64/111 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 1 February 1923 |
| RR/69/256 | Referee's report by Owen Willans Richardson, on a paper 'The surprising amount of energy which can be collected from gases after the electric discharge has passed' by Robert John Strutt, Lord Rayleigh | 1946 |
| NLB/64/451 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 16 April 1923 |
| NLB/63/623 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 16 November 1922 |
| RR/67/381 | Referee's report by William Edward Curtis, on two papers 'New studies on active nitrogen. I. Brightness of the after-glow under varied conditions of concentration and temperature' and 'New studies on active nitrogen. II. Incandescence of metals in active nitrogen, and quantitative estimates of the energy liberated' by Robert John Strutt, Lord Rayleigh | May 1940 |
| NLB/64/181 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 20 February 1923 |
| NLB/63/611 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 15 November 1922 |
| NLB/64/255 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 1 March 1923 |
| NLB/63/73 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 21 June 1922 |
| RR/68/406 | Referee's report by Owen Willans Richardson, on a paper 'Long duration of the Balmer spectrum in excited hydrogen' by Robert John Strutt | [1943] |
| NLB/63/813 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh, FRS | 02 January 1923 |
| NLB/63/493 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh, FRS | 27 October 1922 |
| NLB/63/474 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 26 October 1922 |
| RR/69/74 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The emission of light from spark discharges' by J D Craggs and J M Meek | 1945 |
| RR/68/257 | Referee's report by Ralph Howard Fowler, on a paper 'The ultimate shape of pebbles, natural and artificial' by Robert John Strutt | [1942] |
| RR/68/205 | Second referee's report by Cecil Edgar Tilley, on a paper 'The stone-iron meteorites called pallasites: a synthetic study of their structure and probable mode of formation' by Robert John Strutt | 21 August 1941 |
| RR/68/204 | Referee's report by Cecil Edgar Tilley, on a paper 'The stone-iron meteorites called pallasites: a synthetic study of their structure and probable mode of formation' by Robert John Strutt | 8 July 1941 |
| NLB/65/478 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt] | 6 November 1923 |
| NLB/63/871 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 12 January 1923 |
| NLB/63/676 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 30 November 1922 |
| NLB/63/720 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 07 December 1922 |
| NLB/65/129 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Editor of The Chemical News; 97 Shoe Lane, E.C.4. | 7 August 1923 |
| NLB/63/846 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 06 January 1923 |
| NLB/63/882 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 16 January 1923 |
| NLB/63/806 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 22 December 1922 |
| NLB/64/806 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh | 21 June 1923 |
| NLB/63/893 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 18 January 1923 |
| NLB/64/534 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh, FRS | 02 May 1923 |
| RR/68/473 | Referee's report by Robert John Strutt, 4th Baron Rayleigh, on a paper 'A micro-analysis of the helium and neon contents of air' by Eugen Glueckauf | [1944] |
| RR/69/309 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Further interferometric studies with mica. New multiple-beam fringes and their application' by Samuel Tolansky | 1945 |
| NLB/63/61 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 20 June 1922 |
| NLB/63/108 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 29 June 1922 |
| RR/34/119 | Referee's report by Robert Strutt, Lord Rayleigh, on a paper 'On the sparking potentials of discharge tubes containing carefully purified electrodes' by James Taylor | [December 1926] |
| NLB/63/299 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Lord Rayleigh, FRS | 10 August 1922 |
| NLB/65/152 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Thomas Ralph] Merton, FRS | [August] 1923 |
| NLB/68/303 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 16 June 1925 |
| NLB/65/402 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to M. L. Dunoyer, Secretaire Generale, Societe Francaise de Physique; 48 Avenue de Neuilly, a Neuilly (Seine) | 26 October 1923 |
| NLB/65/294 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh [Robert John Strutt], FRS | 8 October 1923 |
| NLB/65/158 | Copy letter from H. W. Robinson, Library Assistant of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 28 August 1923 |
| NLB/65/126 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to unknown correspondent | 7 August 1923 |
| MS/928/6/3/11 | Letter from Robert John Strutt, 4th Baron Rayleigh, Terling Place, Chelmsford, Essex, to Andrew Russell Forsyth | 17 February 1941 |
| NLB/65/622 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Frederick Alexander] Lindemann, FRS | 30 November 1923 |
| RR/56/121 | Referee's report by Robert John Strutt, 4th Baron Rayleigh, on a paper 'The oxygen afterglow' by Eric M Stoddart | [August 1935] |
| NLB/65/736 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 14 December 1923 |
| NLB/64/869 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; [Robert John Strutt] Lord Rayleigh | 5 July 1923 |
| NLB/64/667 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [John Robert Strutt] Lord Rayleigh FRS | 29 May 1923 |
| NLB/64/625 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 16 May 1923 |
| NLB/65/159 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 28 August 1923 |
| NLB/65/223 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 24 September 1923 |
| NLB/66/343 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 12 April 1924 |
| NLB/65/135 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh [Robert John Strutt], FRS | 8 August 1923 |
| NLB/65/439 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir William Bragg, FRS | 1 November 1923 |
| NLB/65/504 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 9 November 1923 |
| NLB/66/554 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Prof. [Alfred] Fowler, FRS, Gayton, St. Leonard's On Sea | 29 May 1924 |
| NLB/65/570 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 22 November 1923 |
| NLB/65/341 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 16 October 1923 |
| NLB/65/178 | Copy letter from [James Hopwood Jeans, Secretary of the Royal Society]; to Lord Rayleigh [Robert John Strutt], FRS | 8 September 1923 |
| NLB/64/220 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 23 February 1923 |
| NLB/65/123 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh [Robert John Strutt], FRS | 4 August 1923 |
| NLB/65/625 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir William [Henry] Bragg, FRS | 30 November 1923 |
| NLB/65/628 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Right Honourable Lord Rayleigh [Robert John Strutt], FRS | 1 December 1923 |
| NLB/65/650 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 3 December 1923 |
| NLB/64/823 | Copy letter from William Bate Hardy, Secretary of the Royal Society; [Robert John Strutt] Lord Rayleigh | 26 June 1923 |
| NLB/65/713 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 12 December 1923 |
| NLB/66/73 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 18 February 1924 |
| NLB/66/53 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 14 February 1924 |
| NLB/65/678 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 6 December 1923 |
| NLB/65/662 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 5 December 1923 |
| NLB/66/904 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Right Honorable [Robert John Strutt] Lord Rayleigh, FRS | 16 September 1924 |
| NLB/65/103 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 31 July 1923 |
| NLB/67/345 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Right Honourable Lord Rayleigh [Robert John Strutt], FRS | 8 December 1924 |
| NLB/66/729 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 28 June 1924 |
| NLB/66/220 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh. | 18 March 1924 |
| NLB/66/294 | Copy letter from [William Bate Hardy, Secretary] of the Royal Society; to [Robert John Strutt] Lord Rayleigh | 4 April 1924 |
| NLB/65/795 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 4 January 1924 |
| NLB/66/333 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 10 April 1924 |
| NLB/66/528 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [Alfred] Fowler, FRS | 23 May 1924 |
| NLB/66/102 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh | 22 February 1924 |
| NLB/66/475 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 15 May 1924 |
| NLB/66/347 | Copy letter from [Francis Alexander Towle, Assistant Secretary of] the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 12 April 1924 |
| NLB/66/672 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to to the Assistant Secretary, Royal Institution | 17 June 1924 |
| NLB/66/283 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; [Robert John Strutt] Lord Rayleigh, FRS | 2 April 1924 |
| NLB/66/369 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; [Robert John Strutt] Lord Rayleigh, FRS | 23 April 1924 |
| NLB/66/408 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 3 May 1924 |
| NLB/66/622 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 6 June 1924 |
| NLB/69/213 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 2 February 1926 |
| NLB/66/473 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 15 May 1924 |
| NLB/66/422 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; [Robert John Strutt] Lord Rayleigh, FRS | 6 May 1924 |
| NLB/66/805 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Thomas Ralph] Merton, FRS | 11 July 1924 |
| NLB/66/830 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 21 July 1924 |
| NLB/67/244 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 20 November 1924 |
| NLB/66/898 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Right Honorable [Robert John Strutt] Lord Rayleigh, FRS | 11 September 1924 |
| NLB/62/260 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 13 January 1922 |
| NLB/68/447 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], FRS | 13 July 1925 |
| NLB/69/252 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 11 February 1926 |
| NLB/69/671 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the [Robert John Strutt] Lord Rayleigh, FRS | 12 July 1926 |
| NLB/71/546 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Editor of 'Nature' | 6 July 1928 |
| NLB/71/378 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Thermal Syndicate, Ltd., Neptune Bank, Wallsend-on-Tyne | 26 April 1928 |
| NLB/70/950 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to The Lord Rayleigh [Robert John Strutt], FRS | 18 November 1927 |
| NLB/71/416 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the [Right Honourable, Robert John Strutt] Lord Rayleigh, FRS | 8 May 1928 |
| RR/36/85 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On a photoelectric theory of sparking potentials' by James Taylor | [October 1927] |
| NLB/72/453 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Right Honourable Lord Rayleigh [Robert John Strutt], FRS | 30 October 1929 |
| NLB/71/992 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the [Right Honourable, Robert John Strutt] Lord Rayleigh, FRS | 7 January 1929 |
| NLB/72/78 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Right Honourable Lord Rayleigh [Robert John Strutt], FRS | 19 February 1929 |
| NLB/72/720 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Right Honourable Lord Rayleigh [Robert John Strutt], FRS | 19 March 1930 |
| NLB/73/196 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to A. D. C. Parsons Esq., SW1 | 19 February 1931 |
| NLB/64/732 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society;[Robert John Strutt] Lord Rayleigh | 11 June 1923 |
| NLB/65/16 | Copy letter from [James Hopwood Jeans, Secretary of the Royal Society]; to Lord Rayleigh [Robert John Strutt], FRS | 13 July 1923 |
| NLB/65/525 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 13 November 1923 |
| NLB/65/557 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 20 November 1923 |
| NLB/65/823 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 11 January 1924 |
| NLB/65/928 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 31 January 1924 |
| NLB/66/255 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh | 27 March 1924 |
| NLB/66/133 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh. | 28 February 1924 |
| NLB/66/717 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 25 June 1924 |
| NLB/66/686 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 19 June 1924 |
| NLB/63 | New Letter Book volume 63, copy letters sent from Royal Society administration | 10 June 1922-19 January 1923 |
| NLB/65/54 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 19 July 1923 |
| NLB/40/781 | Copy letter from Robert William Frederick Harrison to Messrs Harrison & Sons, St Martin's Lane, WC | 17 August 1909 |
| NLB/28/32 | Copy letter from Robert William Frederick Harrison, to Messrs Few & Company | 22 December 1903 |
| NLB/52/815 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to The Honorary Robert John Strutt, FRS | 1 March 1916 |
| RR/34/22 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Investigations on paramagnetism at low temperatures. — Part II' by L C Jackson | [June 1926] |
| RR/30/49 | Referee's report by Robert Strutt, 4th Baron Rayleigh, on the Bakerian Lecture 'The spectrum of silicon at successive stages of ionisation' by Alfred Fowler | [January 1925] |
| RR/32/96 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the origin of the auroral green line 5577 Å, and other spectra associated with aurora borealis' by John Cunningham McLennan and G M Shrum | 1925 |
| RR/39/24 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The magnetic anisotropy of naphthalene crystals' by S Bhagavantam | [March 1929] |
| RR/60/30 | Referee's report by Robert John Stutt, Lord Rayleigh on a paper 'Spectroscopic identification and manometric measurement of artificially produced helium' by Friedrich Adolf Paneth, E Glückauf and H Loleit | June 1936 |
| NLB/61/709 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of Government Grant Committee, Board B, FRS | 14 October 1921 |
| NLB/62/879 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 25 May 1922 |
| RR/36/19 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On a new effect in the electric discharge' by Thomas Ralph Merton | [December 1927] |
| NLB/57/701 | Copy letter from Sir William Bate Hardy, FRS, Secretary of the Royal Society [?]; to Admiral Sir Henry B [Braderwine] Jackson, FRS, GCB | 20 January 1920 |
| RR/68/405 | Referee's report by Edward Battersby Bailey, on a paper 'Pebbles, natural and artificial, Their shape under various conditions of abrasion' by Robert John Strutt | [1943] |
| RR/31/20 | Referee's report by Robert Strutt, Lord Rayleigh, on a paper 'The interaction of carbon dioxide and hydrogen in the corona due to alternating currents of high frequency' by R Winstanley Lunt | [December 1924] |
| NLB/66/387 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 30 April 1924 |
| NLB/66/549 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 29 May 1924 |
| NLB/66/610 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 5 June 1924 |
| NLB/66/445 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; [Robert John Strutt] Lord Rayleigh, FRS | 9 May 1924 |
| NLB/64/677 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh FRS | 31 May 1923 |
| NLB/65/43 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 17 July 1923 |
| NLB/65/140 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 10 August 1923 |
| NLB/65/604 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 27 November 1923 |
| NLB/66/318 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh | 8 April 1924 |
| IM/GA/Russell/16995 | Strutt, Robert John, 4th Baron Rayleigh | nd |
| NLB/61 | New Letter Book volume 61, copy letters sent from Royal Society administration | 26 April 1921-11 November 1921 |
| NLB/62/771 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to the Lord Rayleigh [Robert John Strutt], Chairman of the Physics Committee and FRS | 4 May 1922 |
| NLB/66/506 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; [Robert John Strutt] Lord Rayleigh, FRS | 20 May 1924 |
| NLB/66/829 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [James Hopwood] Jeans esq., Secretary of the Royal Society | 21 July 1924 |
| NLB/66/878 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 1 August 1924 |
| NLB/66/811 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 15 July 1924 |
| NLB/66 | New Letter Book volume 66, copy letters sent from Royal Society administration | 1 February 1924-25 September 1924 |
| NLB/64 | New Letter Book volume 64, copy letters sent from Royal Society administration | 19 January 1923-11 July 1923 |
| NLB/64/712 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh | 7 June 1923 |
| NLB/65/766 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Lord Rayleigh [Robert John Strutt], FRS | 21 December 1923 |
| NLB/66/841 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh, FRS | 24 July 1924 |
| NLB/57 | New Letter Book volume 57, copy letters sent from Royal Society administration | 27 June 1919-27 February 1920 |
| VF/33 | Portrait of John William Strutt, 4th Baron Rayleigh, by Frederick Thomas Dalton | 21 December 1899 |
| RR/29/28 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Of gas-grown skins. Some of their properties and effects' by [John Job] Manley | May 1923 |
| RR/32/54 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The photometric matching field. Part II. The effect of peripheral stimulation of the retina on the contrast sensibility of the fovea' by S A Emerson and L C Martin | April 1925 |
| RR/34/76 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Densities of ultramicroscopic particles' by Hubert Sutton Patterson and Robert Whyltlaw Gray | [October 1926] |
| RR/21/132 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The occurrence of ozone in the upper atmosphere' by John Norman Pring | [February 1914] |
| RR/40/31 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'The structure and electrification of smoke particles' by Hubert Sutton Patterson, Robert Whytlaw-Gray, and W Cawood | 1929 |
| RR/68/203 | Memoranda, on two papers 'Further studies on active nitrogen. III. Experiments to show that traces of oxygen or other impurity affect primarily the walls of the vessel, and not the phenomena in the gas space' and 'Further studies on active nitrogen IV. The ionisation associated with active nitrogen' by Robert John Strutt | 12 September 1941 |
| RR/14/241 | Referee's report by Arthur Schuster, on a paper 'On the least potential difference required to produce discharge through various gases' by Robert John Strutt, 4th Baron Rayleigh | nd [October 1899] |
| RR/21/99 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The emission of electricity from various substances at high temperatures' by George William Clarkson Kaye and W F Higgins | [May 1914] |
| RR/25/23 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'An inverstigation of the ionising power of the positive ions from a glowing tantalum filament in helium' by Frank Horton and Ann Catherine Davies | [October 1918] |
| RR/26/119 | Referee's report by Robert John Strutt, 4th Baron Rayleigh, on a paper 'On the molecular scattering of light in water and the colour of the sea' by Chandrasekhara Venkata Raman | [November 1921] |
| RR/27/110 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'On the structure of the wavelength = 6708 A. of the isotopes of lithium' by John Cunningham McLennan and D S Ainslie | April 1922 |
| RR/28/10 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The effect of temperature on gravitative attraction' by P E Shaw and N Davy | [March 1922] |
| RR/28/43 | Referee's report by Robert Strutt, 4th Baron Rayleigh, on the Bakerian Lecture 'On the spectrum of hydrogen' by Thomas Ralph Merton and S Barratt | [January 1922] |
| RR/29/42 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The molecular scattering of light in carbon dioxide at high pressures' by Chandrasekhama Venkata Raman and K R Ramanthan | June 1923 |
| RR/30/7 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Tabulated data for the examination of the 230 space-groups by homogeneous X-rays' by William Thomas Astbury and Kathleen Yardley | [March 1924] |
| RR/30/45 | Referee's report by Robert Strutt, 4th Baron Rayleigh, on a paper 'The colours due to thin films on metals' by Ulick Richardson Evans | [June 1924] |
| RR/30/46 | Second referee's report by Robert Strutt, 4th Baron Rayleigh, on a paper 'The colours due to thin films on metals' by Ulick Richardson Evans | [August 1924] |
| RR/31/25 | Referee's report by Robert Strutt, Lord Rayleigh, on a paper 'On the luminescence of nitrogen, argon, and other condensed gases at very low temperatures' by John Cunningham McLennan and G M Shrum | [June 1924] |
| RR/32/95 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'The formation and composition of Mercury Helide' by [John Job] Manley | June 1925 |
| RR/36/21 | Referee's report by Robert John Strutt, 4th Baron Rayleigh, on a paper 'The coagulation of smokes and the theory of Smoluchowski' by G Nonhebel, James Colvin, Hubert Sutton Patterson and Robert Whytlaw-Gray | [July 1927] |
| RR/38/98 | Referee's report by Robert John Strutt, Lord Rayleigh, on a paper 'Investigations on the scattering of light in colloidal solutions and gels. Part I—Agar sol and gel' by K. Krishnamurti | August 1928 |
| RR/40/63 | Referee's report by Gordon Miller Bourne Dobson, on a paper 'A photoelectric method of measuring the light of the night sky with studies of the course of variation through the night' by Robert John Strutt, Lord Rayleigh | April 1929 |
| RR/40/65 | Referee's report by Alfred Fowler, on a paper 'Normal atmospheric dispersion as the cause of the "green flash" at sunset, with illustrative experiments' by Robert John Strutt, Lord Rayleigh | 27 November 1929 |
| RR/42/16 | Referee's report by Thomas Ralph Merton, on a paper 'Fluorescent excitation of mercury by the resonance frequency and by lower frequencies. Further studies' by Robert John Strutt, Lord Rayleigh | January 1932 |
| RR/42/99 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'On the absorption of light by gaseous, liquid and solid xenon' by John Cunningham McLennan and R Turnbull | July 1930 |
| RR/46/73 | Referee's report by Owen Willans Richardson, on a paper 'Fluorescent excitation of mercury by the resonance frequency and by lower frequencies.—V' by Robert John Strutt, 4th Baron Rayleigh | [December 1932] |
| RR/67/280 | Referee's report by Robert John Strutt, Lord Rayleigh on a paper 'The quenching of the resonance radiation of sodium' by W MacF Smith and Ronald George Wreyford Norrish | July 1940 |
| RR/69/257 | Referee's report by Edward Frankland Armstrong, on a paper 'Red sandstones. An experimental study of the conditions under which they may be formed' by Robert John Strutt, Lord Rayleigh | 27 July 1945 |
| RR/69/258 | Referee's report by Herbert Harold Read, on a paper 'Red sandstones. An experimental study of the conditions under which they may be formed' by Robert John Strutt, Lord Rayleigh | 29 June 1945 |
| RR/69/259 | Letter from Herbert Harold Read, on a paper 'Red sandstones. An experimental study of the conditions under which they may be formed' by Robert John Strutt, Lord Rayleigh to Alfred Charles Glyn Egerton | 17 August 1945 |
| RR/69/260 | Letter from Herbert Harold Read, on a paper 'Red sandstones. An experimental study of the conditions under which they may be formed' by Robert John Strutt, Lord Rayleigh to Alfred Charles Glyn Egerton | 17 September 1945 |
| MC/20 | Volume 20 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1905 |
| MC/20/410 | Letter from [Robert John] Strutt, 10 Downing Street, Whitehall, to [Robert William Frederick] Harrison | 25 February 1905 |
| MC/20/412 | Letter from [Robert John] Strutt, Terling Place, Witham, Essex, to [Robert William Frederick] Harrison | 25 May 1905 |