| RefNo | Title | Date |
| EC/1906/08 | Lees, Charles Herbert: certificate of election to the Royal Society | |
| IM/Maull/002690 | Lees, Charles Herbert | nd |
| NLB/68/762 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 30 October 1925 |
| IM/GA/WS/2152 | Lees, Charles Herbert | 1946 |
| RR/17/190 | Referee's report by Charles Niven, on the Bakerian Lecture 'The effect of temperature and pressure on the thermal conductivities of solids.—Part II. The effects of low temperatures on the thermal and electrical conductivities of certain approximately pure metals and alloys' by Charles Herbert Lees | 26 December 1907 |
| NLB/57/260 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor CH [Charles Herbert] Lees, FRS | August 1919 |
| NLB/49 | New Letter Book volume 49, copy letters sent from Royal Society administration | 27 October 1913-6 April 1914 |
| NLB/50 | New Letter Book volume 50, copy letters sent from Royal Society administration | 6 April 1914-17 November 1914 |
| RR/18/148 | Referee's report by Charles Herbert Lees, on a paper 'The association of lead with uranium in rock-minerals, and its application to the measurement of geological time' by Arthur Holmes | March 1911 |
| NLB/48/159 | Copy letter from Robert William Frederick Harrison, to Dr [Charles Herbert] Lees, Chairman of the Physics and Chemistry Committee | 26 May 1913 |
| NLB/48/81 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 8 May 1913 |
| NLB/30/49 | Copy letter from Joseph Larmor, to Dr Charles Herbert Lees, [Fellow of the Royal Society], 42 Lorne Grove, Fallowfield, Manchester | January 1905 |
| NLB/38/537 | Copy letter from Robert William Frederick Harrison, to Charles Herbert Lees, Fellow of the Royal Society, Greenacres, Mayfield Avenue, Woodford Green, Essex | [September 1908] |
| NLB/32/747 | Copy letter from Robert William Frederick Harrison, to [Messrs Harrison & Sons] | [19 May 1906] |
| NLB/41/708 | Copy letter from Joseph Larmor, to Charles Herbert Lees, Fellow of the Royal Society | 8 February 1910 |
| NLB/37/490 | Copy letter from Robert William Frederick Harrison to Professor C [Charles] H [Herbert] Lees, Fellow of the Royal Society | 27 March 1908 |
| NLB/37/155 | Copy letter from Robert William Frederick Harrison to Professor C [Charles] H [Herbert] Lees FRS | 3 February 1908 |
| NLB/36/245 | Copy letter from Robert William Frederick Harrison, to Professor Charles Herbert Lees, Fellow of the Royal Society | 1 October 1907 |
| NLB/37/408 | Copy letter from Robert William Frederick Harrison to Professor C [Charles] H [Herbert] Lees, Fellow of the Royal Society | 14 March 1908 |
| NLB/36/830 | Copy letter from Joseph Larmor, to Professor Charles Herbert Lees, [Fellow of the Royal Society] | 24 December 1907 |
| NLB/48/615 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 7 August 1913 |
| NLB/44/653 | Copy letter from Robert William Frederick Harrison to Professor C [Charles] H [Herbert] Lees FRS | 9 October 1911 |
| NLB/47/351 | Copy letter from Robert William Frederick Harrison to [Charles Herbert] Lees | 21 January 1913 |
| NLB/47/477 | Copy letter from Robert William Frederick Harrison to Professor C [Charles] H [Herbert] Lees FRS | 5 February 1913 |
| NLB/48/851 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee | 24 October 1913 |
| NLB/48/683 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Sectional Committee | 23 September 1913 |
| NLB/48/91 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 9 May 1913 |
| NLB/48/72 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 6 May 1913 |
| NLB/48/82 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 8 May 1913 |
| NLB/48/674 | Copy letter from Robert William Frederick Harrison, to [Charles Herbert] Lees, Fellow of the Royal Society, The Chairman of the Physics & Chemistry Sectional Committee | 16 September 1913 |
| NLB/48/83 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee) | 8 May 1913 |
| NLB/48/536 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 23 July 1913 |
| NLB/48/197 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Sectional Committee | 30 May 1913 |
| NLB/47/844 | Copy letter from Robert William Frederick Harrison to Professor C [Charles] H [Herbert] Lees FRS | 21 April 1913 |
| NLB/48/318 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 13 June 1913 |
| NLB/48/845 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Less, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee | 23 October 1913 |
| NLB/48/257 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 5 June 1913 |
| NLB/48/599 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 2 August 1913 |
| NLB/48/616 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee] | 9 August 1913 |
| NLB/48/519 | Copy letter from Robert William Frederick Harrison, to Dr [Charles Herbert] Lees, Fellow of the Royal Society | 18 July 1913 |
| NLB/50/228 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 26 May 1914 |
| NLB/48/663 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 8 September 1913 |
| NLB/48/566 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics of the Chemistry Committee | 28 July 1913 |
| NLB/48/499 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics and Chemsitry Sectional Committee | 16 July 1913 |
| NLB/50/453 | Copy letter from Robert William Frederick Harrison, to Dr [Charles Herbert] Lees, Fellow of the Royal Society | 10 July 1914 |
| NLB/48/625 | Copy letter from Robert William Frederick Harrison, to Messrs Longmans, Green & Company | 13 August 1913 |
| NLB/48/642 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee | 22 August 1913 |
| NLB/48/816 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics & Chemistry Sectional Committee | 17 October 1913 |
| NLB/50/102 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 1 May 1914 |
| NLB/50/44 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Sectional Committee | 22 April 1914 |
| NLB/48/846 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Less, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee | 23 October 1913 |
| NLB/50/133 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 6 May 1914 |
| NLB/50/546 | Copy letter from Robert William Frederick Harrison, to Professor Charles Herbert Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee | 28 July 1914 |
| NLB/50/404 | Copy letter from Charles Herbert Lees, to Professor [John Ambrose] Fleming, [Fellow of the Royal Society] | [July 1914] |
| NLB/51/120 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees FRS, Chairman of the Physics and Chemistry Committee | 14 December 1914 |
| NLB/51/133 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees FRS, Chairman of the Physics and Chemistry Committee | 16 December 1914 |
| NLB/51/143 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees, Chairman of the Physics and Chemistry Committee | 19 December 1914 |
| NLB/50/526 | Copy letter from Charles Herbert Lees, to [Alfred Edwin Howard] Tutton, [Fellow of the Royal Society] | 22 July 1914 |
| NLB/51/315 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees FRS | 8 February 1915 |
| NLB/50/524 | Copy letter from Charles Herbert Lees, to Professor [John Ambrose] Fleming, [Fellow of the Royal Society] | 22 July 1914 |
| NLB/50/547 | Copy letter from Robert William Frederick Harrison, to Professor Charles Herbert Lees, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee | 28 July 1914 |
| NLB/51/620 | Copy letter from Charles Herbert Lees FRS to Professor Charles Frewen Jenkin | 6 May 1915 |
| NLB/51/637 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society Professor Charles Herbert Lee FRS | 11 May 1915 |
| NLB/51/737 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees FRS, Chairman of the Physics and Chemistry Committee | 11 June 1915 |
| NLB/51/819 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees FRS, Chairman of the Physics and Chemistry Committee | 7 July 1915 |
| NLB/52/37 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees FRS, Chairman of the Physics and Chemistry Committee | 27 July 1915 |
| NLB/51/826 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees FRS | 9 July 1915 |
| NLB/51/769 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees, Chairman of the Physics and Chemistry Committee | 22 June 1915 |
| NLB/52/23 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Charles Herbert Lees FRS, Chairman of the Physics and Chemistry Committee | 20 July 1915 |
| NLB/52/447 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor Charles Herbert Lees, Chairman of the Physics and Chemistry Committee and FRS | 10 December 1915 |
| NLB/52/155 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor Charles Herbert Lees, FRS | 28 September 1915 |
| NLB/52/371 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor Charles Herbert Lees, Chairman of the Physics and Chemistry Committee and FRS | 19 November 1915 |
| NLB/52/356 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor Charles Herbert Lees, Chairman of the Physics and Chemistry Committee and FRS | 15 November 1915 |
| NLB/52/448 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor Charles Herbert Lees, Chairman of the Physics and Chemistry Committee and FRS | 10 December 1915 |
| RR/22/25 | Referee's report by Charles Herbert Lees, on a paper 'X-rays and crystal structure' by William Henry Bragg | 1915 |
| RR/19/17 | Referee's report by Charles Herbert Lees, on a paper 'Ionic size in relation to molecular physics, together with a new law relating to the heats of formation of solid, liquid, and ionic molecules' by William Robert Bousfield | [December 1912] |
| RR/20/43 | Referee's report by Charles Herbert Lees, on a paper 'On the efficiency of selenium as a detector of light' by E E Fournier d'Albe | June 1913 |
| RR/26/112 | Referee's report by Charles Herbert Lees, on a paper 'The ratio of the specific heats of air and of carbon dioxide' by J R Partington | [June 1921] |
| NLB/72/957 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 24 July 1930 |
| RR/22/70 | Referee's report by Thomas Edward Stanton, on a paper 'On the effect of the form of the transverse section on the frictional resistance to the motion of an elongated body parallel to its length through a fluid' by Chaarles Herbert Lees | 12 October 1915 |
| RR/26/107 | Referee's report by Charles Herbert Lees, on a paper 'Suspended impurity in the air' by J S Owens | [November 1921] |
| RR/38/88 | Referee's report by Charles Herbert Lees, on a paper 'An electricsl method of determining thermal conductivities of metal wires' by W G Kannuluik | December 1929 |
| RR/26/78 | Referee's report by Samuel Walter Johnson Smith, on a paper 'The thermal stresses in spherical shells concentrically heated' by Charles Herbet Lees | [July 1921] |
| RR/26/143 | Referee's report by Charles Herbert Lees, on a paper 'A new form of interferometer' by H P Waran | [1921] |
| RR/41/131 | Referee's report by Charles Herbert Lees, on a paper 'The influence of low temperatures on the thermal diffusion effect' by T L Ibbs and K E Grew | October 1930 |
| RR/29/20 | Referee's report by Sydney Chapman, on a paper 'On coupled pendulums' by Charles Herbert Lees | October 1923 |
| RR/31/57 | Referee's report by Charles Herbert Lees, on a paper 'The thermal and electrical conductivities of some pure metals' by F H Schofield | [November 1924] |
| RR/29/13 | Referee's report by Charles Herbert Lees, on a paper 'The thermal conductivities of metal crystals. I - Bismuth' by George William Clarkson Kaye and John Keith Roberts | May 1923 |
| NLB/56/895 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 23 June 1919 |
| NLB/57/21 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor CL [Charles Herbert] Lees, FRS | 3 July 1919 |
| NLB/58/70 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 10 March 1920 |
| NLB/51 | New Letter Book volume 51, copy letters sent from Royal Society administration | 18 November 1914-9 July 1915 |
| NLB/58/388 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 29 April 1920 |
| RR/11/179 | Referee's report by William Edward Ayrton, on a paper 'On the thermal conductivities of crystals and other bad conductors' by Charles Herbert Lees | 17 March 1892 |
| RR/11/180 | Referee's report by George Carey Foster, on a paper 'On the thermal conductivities of crystals and other bad conductors' by Charles Herbert Lees | 14 April 1892 |
| RR/17/305 | Referee's report by Charles Herbert Lees, on a paper 'The rate of heat transfer between fluids and metal surfaces' by H P Jordan | December 1908 |
| RR/18/54 | Referee's report by John Joly, on a paper 'On the shapes of the isogeotherms under mountain ranges in radio-active districts' by Charles Herbert Lees | January 1918 |
| RR/33/121 | Referee's report by Charles Herbert Lees, on a paper 'The effect of temperature on the viscosity of air' by F A Williams | October 1925 |
| RR/13/212 | Letter from Richard Tetley Glazebrook, on a paper 'On the thermal conductivities of single and mixed solids and liquids and their variation with temperature' by Charles Herbert Lees to the author | 18 February 1898 |
| RR/18/53 | Referee's report by William Henry Bragg, on a paper 'On the direction of motion of an electron ejected from an atom by ultra-violet light' by R D Kleeman | April 1910 |
| RR/13/213 | Letter from Charles Herbert Lees, on his paper 'On the thermal conductivities of single and mixed solids and liquids and their variation with temperature' to Richard Tetley Glazebrook | 24 February 1898 |
| RR/13/215 | Letter from Charles Herbert Lees, on his paper 'On the thermal conductivities of single and mixed solids and liquids and their variation with temperature' to Richard Tetley Glazebrook | 5 March 1898 |
| RR/16/333 | Referee's report by William Davidson Niven, on a paper 'Effects of temperature and pressure on the thermal conductivities of solids. Part I. The effect of temperature on the thermal conductivities of some electrical insulations' by Charles Herbert Lees | January 1905 |
| RR/16/332 | Referee's report by Hugh Longbourne Callendar, on a paper 'Effects of temperature & pressure on the thermal conductivities of solids. Part I. The effect of temperature on the thermal conductivities of some electrical insulations' by Charles Herbert Lees | 12 December 1904 |
| RR/13/214 | Letter from Charles Herbert Lees, on his paper 'On the thermal conductivities of single and mixed solids and liquids and their variation with temperature' to Richard Tetley Glazebrook | 1 March 1898 |
| RR/22/71 | Referee's report by Charles Thomson Rees Wilson, on a paper 'On the shapes of the equipotential surfaces in the air near long walls or buildings and on their effect on the measurement of atmospheric potential gradients' by Charles Herbert Lees | May 1915 |
| RR/18/1 | Referee's report by Charles Herbert Lees, on a paper 'On the viscous flow in metals and allied phenomena' by Edward Neville da Costa Andrade | February 1910 |
| RR/43/101 | Second referee's report by Charles Herbert Lees, on a paper 'The thermal conductivities of the saturated hydrocarbons in the gaseous state' by W B Mann and B G Dickins | July 1931 |
| RR/29/36 | Referee's report by Charles Herbert Lees, on a paper 'The ratio of the specific heats of nitrogen and of oxygen' by J R Partington and A B Howe | December 1923 |
| RR/20/73 | Referee's report by Charles Herbert Lees, on a paper 'On the determination of the wave-length of the linear electrical oscillator' by James E Ives | February 1914 |
| RR/44/45 | Referee's report by Charles Herbert Lees, on a paper 'The rate of evaporation from circular water surfaces' by C P Black and J A Matthew | July 1931 |
| NLB/60/730 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 19 March 1921 |
| RR/52/83 | Referee's report by Charles Herbert Lees, on a paper 'Measurement of correction of an optical method' by O A Saunders and M Fishenden | May 1934 |
| RR/50/10 | Referee's report by Charles Herbert Lees, on a paper 'The supraconductivity of alloy systems' by J F Allen | May 1933 |
| RR/47/35 | Referee's report by Charles Herbert Lees, on a paper 'On the saturation pressures of steam (170° to 374° C.)' by Alfred Charles Glyn Egerton and G S Callendar | April 1932 |
| RR/50/13 | Referee's report by Charles Herbert Lees, on a paper 'A theory of the viscosity of liquids I, II' by Edward Neville Da Costa Andrade | 25 October 1933 |
| RR/63/15 | Referee's report by Charles Herbert Lees, on a paper 'The influence of temperature on the capture of neutrons by various elements' by J L Michiels and J A Saxton | March 1937 |
| NLB/61/213 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 2 June 1921 |
| RR/50/11 | Second referee's report by Charles Herbert Lees, on a paper 'The supraconductivity of alloy systems' by J F Allen | July 1933 |
| RR/61/10 | Second referee's report by Charles Herbert Lees, on a paper 'Thermal conduction in hydrogen-deuterium mixtures' by C T Archer | February 1938 |
| NLB/61/693 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 14 October 1921 |
| NLB/57/531 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor CH [Charles Herbert] Lees, FRS | 26 November 1919 |
| NLB/57/593 | Copy letter from Sir James Hopwood Jeans, Secretary of the Royal Society; to the Director [Sir Joseph Ernest Petavel, FRS, KBE], the National Physical Laboratory | 12 December 1919 |
| RR/54/120 | Referee's report by Charles Herbert Lees, on a paper 'The determination of the specific heat of gases at high temperatures by the sound velocity method I. Carbon monoxide' by G G Sherratt and Ezer Griffiths | September 1934 |
| NLB/65/397 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Horace] Lamb, FRS | 26 October 1923 |
| RR/62/8 | Referee's report by Charles Herbert Lees, on a paper 'The freezing point of palladium' by F H Schofield | [February 1936] |
| RR/58/101 | Referee's report by Charles Herbert Lees, on a paper 'The isotherms of CO2 in the neighbourhood of the critical point and round the coexistence line' by A Michels, B Blaisse and C Michels | July 1936 |
| RR/63/86 | Referee's report by Charles Herbert Lees, on a paper 'On the motion of a fluid heated from below' by R J Schmidt and O A Saunders | December 1937 |
| RR/64/44 | Referee's report by Charles Herbert Lees, on a paper 'The thermal diffusion of radon gas mixtures' by G E Harrison | [March 1937] |
| RR/58/96 | Referee's report by Charles Herbert Lees, on a paper 'Thermodynamic properties of CO2 up to 3000 atmospheres between 25 and 150°C' by A Michels, A Bijl and C Michels | October 1936 |
| RR/65/33 | Second referee's report by Charles Herbert Lees, on a paper 'The area of contact between stationary and moving surfaces' by Frank Philip Bowden and David Tabor | June 1938 |
| RR/61/56 | Referee's report by Charles Herbet Lees, on a paper 'The diffusion of pairs of gases with molecules of equal mass' by L E Boardman and N E Wild | June 1937 |
| RR/58/100 | Referee's report by Charles Herbert Lees, on a paper 'Series evaluation of the isotherm data of CO2 between 0 and 150°C. and up to 3000 atm' by A Michels and C Michels | July 1936 |
| RR/65/129 | Referee's report by Charles Herbert Lees, on a paper 'The diffusion of radon gas mixtures' by W Hirst and G E Harrison | 1938 |
| RR/65/35 | Second referee's report by Charles Herbert Lees, on a paper 'The nature of sliding and the analysis of friction' by Frank Philip Bowden and L Leben | June 1938 |
| RR/63/51 | Referee's report by Charles Herbert Lees, on a paper 'The variation with temperature of the thermal conductivity and the X-ray structure of some micas I—The thermal conductivity up to 600° C' by R W Powell and Ezer Griffiths | August 1937 |
| RR/65/34 | Referee's report by Charles Herbert Lees, on a paper 'The nature of sliding and the analysis of friction' by Frank Philip Bowden and L Leben | April 1938 |
| RR/66/70 | Referee's report by Charles Herbert Lees, on a paper 'Critical and co-operative phenomena. V. Specific heats of solids and liquids' by A F Devonshire | [October 1939] |
| RR/65/162 | Referee's report by Charles Herbert Lees, on a paper 'Critical and co-operative phenomena. IV. A theory of disorder in solids and liquids and the process of melting' by John Edward Lennard-Jones and A F Devonshire | January 1939 |
| RR/17/449 | Referee's report by Charles Herbert Lees, on a paper 'Thermal conductivity of air and other gases' by George W Todd | June 1909 |
| MC/34/125 | Letter from Charles [Herbert] Lees, East London College (University of London), Mile End Road, E.1., to Mr [Robert] Harrison, [Royal Society] | 5 October 1919 |
| NLB/57/295 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor CH [Charles Herbert ] Lees, FRS | 9 October 1919 |
| RR/67/166 | Referee's report by Charles Herbert Lees, on two papers 'The diffraction of sound pulses I. Diffraction by a semi-infinite plane' and 'The diffraction of sound pulses II. Diffraction by an infinite wedge' by Frederick Gerard Friedlander | April 1940 |
| RR/67/165 | Letter from J D Griffith Davies, Assistant Secretary of the Royal Society, on two papers 'The diffraction of sound pulses I. Diffraction by a semi-infinite plane' and 'The diffraction of sound pulses II. Diffraction by an infinite wedge' by Frederick Gerard Friedlander to Charles Herbert Lees | 15 April 1940 |
| RR/56/63 | Referee's report by Charles Herbert Lees, on a paper 'On the application of Debye's theory of polar molecules in solid dielectrics' by B J O'Kane | [September 1935] |
| NLB/65/470 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 5 November 1923 |
| RR/47/37 | Second referee's report by Charles Herbert Lees, on a paper 'On the saturation pressures of steam (170° to 374° C.)' by Alfred Charles Glyn Egerton and G S Callendar | July 1932 |
| RR/34/85 | Referee's report by Charles Herbert Lees, on a paper 'The effect of temperature on the viscosity of air' by Alexander Oliver Rankine | [February 1926] |
| NLB/65/434 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Professor [Horace] Lamb, FRS | 1 November 1923 |
| RR/48/65 | Referee's report by Charles Herbert Lees, on a paper 'The velocity of sound in gases in tubes' by George William Clarkson Kaye and G G Sherratt | [February 1933] |
| RR/43/102 | Referee's report by Charles Herbert Lees, on a paper 'The thermal conductivities of the saturated hydrocarbons in the gaseous state' by W B Mann and B G Dickins | April 1931 |
| 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/67/294 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 2 December 1924 |
| NLB/72/962 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [Charles Herbert] Lees, FRS | 30 July 1930 |
| NLB/48/227 | Copy letter from Robert William Frederick Harrison, to Professor [Charles Herbert] Lees, Fellow of the Royal Society | 2 June 1913 |
| NLB/47/758 | Copy letter from Robert William Frederick Harrison to Professor C [Charles] H [Herbert] Lees FRS | 8 April 1913 |
| NLB/52/471 | Copy letter from [Robert William Frederick Harrison, Assistant Secretary of the Royal Society]; to Professor Charles Herbert Lees, Chairman of the Physics and Chemistry Committee and FRS | 17 December 1915 |
| NLB/52/470 | Copy letter from [Robert William Frederick Harrison, Assistant Secretary of the Royal Society]; to Professor Charles Herbert Lees, Chairman of the Physics and Chemistry Committee and FRS | 17 December 1915 |
| RR/41/43 | Referee's report by Charles Herbert Lees, on a paper 'A note on the measurement of the specific heats of gases' by Sydney Chapman | January 1930 |
| RR/29/21 | Referee's report by Frank Edward Smith, on a paper 'Inductively coupled low resistance circuits' by Chales Herbert Lees | 29 January 1923 |
| RR/26/122 | Referee's report by Charles Herbert Lees, on a paper 'A new optical property of biaxial crystals' by Chandrasekhara Venkata Raman and V S Tamma | [September 1921] |
| NLB/56/488 | Copy letter from [Dr. Arthur Schuster, Secretary of the Royal Society]; to Dr. Charles [Herbert] Lees, FRS | 21 February 1919 |
| RR/28/106 | Referee's report by Charles Herbert Lees, on a paper 'The measurement of thermal conductivity' by Ezer Griffiths and George William Clarkson Kaye | [April 1923] |
| NLB/48 | New Letter Book volume 48, copy letters sent from Royal Society administration | 25 April 1913-25 October 1913 |
| NLB/60/486 | Copy letter from an unknown correspondent; to Sir Richard [Tetley] Glazebrook, Chairman of the Physics Committee and FRS | 15 February 1921 |
| RR/17/189 | Referee's report by George Frederick Charles Searle, on the Bakerian Lecture 'The effect of temperature and pressure on the thermal conductivities of solids.—Part II. The effects of low temperatures on the thermal and electrical conductivities of certain approximately pure metals and alloys' by Charles Herbert Lees | 10 December 1907 |
| RR/26/31 | Referee's report by Charles Herbert Lees, on a paper 'On the velocity of sound in gases at high temperatures, and the ratio of the specific heats' by Harold Baily Dixon, Colin Campbell and A Parker | 16 June 1921 |
| RR/31/47 | Referee's report by Charles Herbert Lees, on a paper 'The thermal expansion of crystals of metallic bismuth' by J Keith Roberts | [June 1924] |
| RR/65/71 | Referee's report by Charles Herbert Lees, on a paper 'Critical and co-operative phenomena. III. A theory of melting and the structure of liquids' by A F Devonshire and John Edward Lennard-Jones | September 1938 |
| RR/63/52 | Second referee's report by Charles Herbert Lees, on a paper 'The variation with temperature of the thermal conductivity and the X-ray structure of some micas I—The thermal conductivity up to 600° C' by R W Powell and Ezer Griffiths | September 1937 |
| RR/65/32 | Referee's report by Charles Herbert Lees, on a paper 'The area of contact between stationary and moving surfaces' by Frank Philip Bowden and David Tabor | April 1938 |
| NLB/64/677 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Robert John Strutt] Lord Rayleigh FRS | 31 May 1923 |
| RR/19/148 | Referee's report by Charles Herbert Lees, on a paper 'An experimental investigation of the influence of the condenser on the working of a ruhmkorff coil, together with a practical outcome thereof' by W H Wilson | [March 1912] |
| RR/45/13 | Referee's report by Charles Herbert Lees, on a paper 'The influence of air movement and atmospheric conditions on the heat loss from a cylindrical moist body' by Alan J Canny and Charles James Martin | nd [August 1930] |
| RR/51/57 | Referee's report by Charles Herbert Lees, on a paper 'Determinations of the fundamental standards of length in terms of wave-lengths of light' by J E Sears, Junr. and H Barrell | [December 1933] |
| 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/52 | New Letter Book volume 52, copy letters sent from Royal Society administration | 9 July 1915-8 March 1916 |
| NLB/57 | New Letter Book volume 57, copy letters sent from Royal Society administration | 27 June 1919-27 February 1920 |
| RR/61/9 | Referee's report by Charles Herbert Lees, on a paper 'Thermal conduction in hydrogen-deuterium mixtures' by C T Archer | July 1937 |
| RR/34/40 | Referee's report by Hugh Longbourne Callendar, on a paper 'On the determination of the specific heats of gases at constant pressure' by Charles Herbert Lees | [May 1926] |
| RR/51/46 | Referee's report by Charles Herbert Lees, on a paper 'An experimental investigation of thermal conduction through vapours' by S W Milverton | [January 1935] |
| RR/64/102 | Referee's report by Charles Herbert Lees, on a paper 'Critical phenomena in gases. II. Vapour pressures and boiling points' by John Edward Lennard-Jones and A F Devonshire | [January 1938] |
| RR/57/118 | Referee's report by Charles Herbert Lees, on a paper 'On the properties of real fluids' by S C Bradford | [September 1936] |
| RR/41/54 | Referee's report by Charles Herbert Lees, on a paper 'On the equation of state of propellant gases' by A D Crow and W E Grimshaw | September 1930 |
| MC/33/104 | Letter from Charles [Herbert] Lees, Greenacres, Dryhill Park Road, Tonbridge, to Dr [Arthur] Schuster, [Royal Society] | 25 February 1918 |
| RR/34/39 | Referee's report by Owen Willans Richardson, on a paper 'On the determination of the specific heats of gases at constant pressure' by Charles Herbert Lees | 17 May 1926 |
| RR/34/41 | Referee's report by Frederick Alexander Lindemann, Viscount Cherwell, on a paper 'On the determination of the specific heats of gases at constant pressure' by Charles Herbert Lees | [June 1926] |
| AP/80/14 | Unpublished paper, 'On the determination of the specific heats of gases at constant pressure and at constant volume and their ratio by adiabatic expansion' by Charles H [Herbert] Lees | 1926 |
| RR/13/210 | Referee's report by Charles Vernon Boys, on a paper 'On the thermal conductivities of single and mixed solids and liquids and their variation with temperature' by Charles Herbert Lees | 27 December 1897 |
| RR/13/216 | Referee's report by George Carey Foster, on a paper 'On the thermal conductivities of single and mixed solids and liquids and their variation with temperature' by Charles Herbert Lees | 9 February 1898 |
| RR/17/228 | Referee's report by Charles Herbert Lees, on a paper 'Alternate current measurement' by W E Sumpner | [November 1907] |
| RR/21/3 | Referee's report by Charles Herbert Lees, on a paper 'The flow in metals under large constant stresses' by Edward Neville Da Costa Andrade | [February 1914] |
| RR/26/77 | Referee's report by Augustus Edward Hough Love, on a paper 'The thermal stresses in spherical shells concentrically heated' by Charles Herbet Lees | 6 October 1921 |
| RR/26/104 | Referee's report by Charles Herbert Lees, on a paper 'A new form of Wehnelt interrupter' by F H Newman | [March 1921] |
| RR/27/106 | Referee's report by Hugh Longbourne Callendar, on a paper 'The thermal stresses in solid and in hollow circular cylinders concentrically heated' by Charles Herbert Lees | May 1922 |
| RR/28/123 | Referee's report by Charles Herbert Lees, on a paper 'On the velocity of sound in gases and vapours, and the ratio of the specific heats' by Harold Baily Dixon and Gilbert Greenwood | [December 1923] |
| RR/48/111 | Referee's report by Charles Herbert Lees, on a paper 'On the equation of state for real gases' by Andrew McCance | [July 1932] |
| RR/49/64 | Referee's report by Charles Herbert Lees, on a paper 'The acoustical insulation afforded by double partitions constructed from similar components' by J E R Constable | [July 1933] |
| RR/53/94 | Referee's report by Charles Herbert Lees, on a paper 'The effect of temperature on the thermal conductivity and the accommodation coefficient of hydrogen' by H S Gregory | [November 1934] |
| RR/57/127 | Referee's report by Charles Herbert Lees, on a paper 'The measurement of contact potential difference' by Charles William Oatley | [February 1936] |
| RR/58/97 | Second referee's report by Charles Herbert Lees, on a paper 'Thermodynamic properties of CO2 up to 3000 atmospheres between 25 and 150°C' by A Michels, A Bijl and C Michels | December 1936 |
| RR/59/24 | Referee's report by Charles Herbert Lees, on a paper 'Viscosity of liquid sodium and potassium' by Y S Chiong | [April 1936] |
| RR/62/19 | Referee's report by Charles Herbert Lees, on a paper 'The determination of the specific heat of gases at high temperatures by the sound velocity method II—Carbon dioxide' by G G Sherratt and Ezer Griffiths | [May 1936] |
| RR/47/125 | Referee's report by Charles Herbert Lees, on a paper 'The geometry of the siliceous skeletons of the radiolaria' by D'Arcy Wentworth Thompson | March 1932 |
| MC/19/559 | Letter from Charles [Herbert] Lees, Physical Laboratory, University of Manchester, to the Royal Society | [10 December 1904] |
| MC/28/176 | Letter from Charles [Herbert] Lees, Greenacres, Woodside Road, Woodford Green, Essex, to Mr [Robert] Harrison, [Royal Society] | 7 December 1913 |
| MC/19 | Volume 19 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1904 |
| MC/30/112 | Letter from Charles [Herbert] Lees, The Royal Society, Burlington House, London, W, to Mr [Robert] Harrison, [Royal Society] | 12 May 1915 |
| MC/22/175 | Letter from Charles [Herbert] Lees, Greenacres, Mayfield Avenue, Woodford Green, Essex, to the Royal Society | 30 September 1907 |
| MC/34/126 | Letter from Charles [Herbert] Lees, Greenacres, Dryhill Park Road, Tonbridge, to Dr [Arthur] Schuster, [Secretary of the Royal Society], London, W | 10 November 1912 |
| MC/38 | Volume 38 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1924 |
| MC/38/63 | Letter from [Charles Herbert] Lees, East London College (University of London), Mile End Road, to [William Bate] Hardy | 26 November 1924 |
| MC/39 | Volume 39 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1925 |
| MC/39/70 | Letter from [Charles Herbert] Lees, Greenacres, Dry Hill Road, Tonbridge, to [Francis Alexander] Towle | 6 November 1925 |
| MC/21/378 | Letter from Charles H [Herbert] Lees, East London College, Mile End Road, London, to [The Royal Society] | 7 May 1906 |
| MC/21/379 | Letter from Charles H [Herbert] Lees, East London College, Mile End Road, London, to [The Royal Society] | 17 September 1906 |