| Reference number | Title | Date |
| EC/1903/07 | Mallock, Henry Reginald Arnulph: certificate of election to the Royal Society | |
| EC/1903/06 | Mallock, Henry Reginald Arnulph: certificate of election to the Royal Society | |
| MS/525/5/1/10 | Letter from Arnulph Mallock, 6 Cresswell Gardens, to Dugald Clerk | 11 December 1914 |
| MS/525/6/12/5 | Letter from Arnulph Mallock, 6 Cresswell Gardens, to Dugald Clerk | 31 January 1916 |
| MS/525/6/1/2 | Letter from Arnulph Mallock, 6 Cresswell Gardens, to the Secretary, Royal Society War Committee Engineering Section | 8 December 1914 |
| MS/525/6/3/1 | 'Note by Mr Mallock with regard to question (3)': report by Arnulph Mallock on blast pressures experienced in the neighbourhood of guns | [1 December 1914] |
| MS/525/6/10/3 | Letter from Arnulph Mallock, 6 Cresswell Gardens, to the Secretary, Royal Society War Committee, Engineering Section | 10 April 1915 |
| MS/525/6/12/2 | 'Impact tests', report by Arnulph Mallock | 15 January 1916 |
| MS/525/6/11/5 | Letter from Arnulph Mallock, 6 Cresswell Gardens, to Dugald Clerk | 12 January 1916 |
| MS/525/6/10/9 | Note on the effect of perspective on range by Archibald Mallock | 31 March 1915 |
| MS/525/6/12/3 | 'Impact tests note', by Arnulph Mallock | 15 January 1916 |
| MS/525/6/10/26 | Report by Arnulph Mallock on a letter and specification from a Mr Chew on aircraft range-finding | 27 May 1916 |
| MS/525/6/12/1 | Letter from Arnulph Mallock, 6 Cresswell Gardens, to Dugald Clerk | 15 January 1916 |
| NLB/64/45 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Henry Arnulph Reginald] Mallock Esquire, FRS | 23 January 1923 |
| IM/002939 | Mallock, Henry Reginald Arnulph | nd |
| NLB/27/11 | Copy letter from Robert William Frederick Harrison, to Henry Reginald Arnulph Mallock, Fellow of the Royal Society | 16 June 1903 |
| NLB/44/174 | Copy letter from Robert William Frederick Harrison to H [Henry] R [Reginald] A [Arnulph]Mallock FRS | 23 May 1911 |
| NLB/40/462 | Copy letter from Robert William Frederick Harrison to H [Henry Reginald Arnulph] Mallock FRS | 11 June 1909 |
| NLB/11/993 | Copy letter from Herbert Rix, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 13 November 1895 |
| NLB/11/504 | Copy letter from Herbert Rix, to Lord Kelvin [William Thomson], Fellow of the Royal Society | 15 July 1895 |
| NLB/11/501 | Copy letter from Herbert Rix, to Lord Rayleigh [John William Strutt], Secretary, Royal Society | 13 July 1895 |
| RR/17/69 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'Investigation of the law of burning of modified cordite' by Major J H Mansell | 4 Jauary 1907 |
| NLB/16/766 | Copy letter from an unknown correspondent, to Osborne Reynolds, Owens College, Manchester | [2 June 1898] |
| NLB/16/812 | Copy letter from Arthur William Rucker, to Mr [H R A] Mallock | 14 June 1898 |
| NLB/16/774 | Copy letter from Robert William Frederick Harrison, to R T Glazebrook, Fellow of the Royal Society | 3 June 1898 |
| NLB/18/392 | Copy letter from Robert William Frederick Harrison, to A Mallock, 3 Victoria Street, Westminster, S.W. | 3 March 1899 |
| AP/73/16/2 | Unpublished diagrams, 'Stream lines' by A [Henry Reginald Arnulph] Mallock | 1898 |
| NLB/31/711 | Copy letter from Robert William Frederick Harrison, to Henry Reginald Arnulph Mallock, Fellow of the Royal Society, 8 Creswell Gardens, South Kensington, S.W. | 3 November 1905 |
| NLB/35/321 | Copy letter from Robert William Frederick Harrison, to Henry Reginald Arnulph Mallock, Fellow of the Royal Society | 16 May 1907 |
| MC/23/283 | Letter from [Henry Reginald Arnulph] Mallock, 6 Creswell Gardens, SW, to the [Royal Society] | 14 March 1908 |
| NLB/37/72 | Copy letter from Robert William Frederick Harrison to W Bateson, Weston House, Grantchester, Cambridge | 20 January 1908 |
| NLB/37/856 | Copy Letter from Robert William Frederick Harrison to Harrison & Sons | 26 May 1908 |
| NLB/39/110 | Copy letter from Joseph Larmor to [Henry Reginald] A [Arnulph] Mallock, Fellow of the Royal Society | November 1908 |
| NLB/37/579 | Copy letter from Robert William Frederick Harrison to H [Henry Reginald] A [Arnulph] Mallock, Fellow of the Royal Society | 8 April 1908 |
| NLB/39/657 | Copy letter from Joseph Larmor to [Henry Reginald Arnulph] Mallock | 20 February 1909 |
| NLB/37/620 | Copy letter from Robert William Frederick Harrison to H [Henry Reginald] A [Arnulph] Mallock, Fellow of the Royal Society | 14 April 1908 |
| MC/23/285 | Letter from [Henry Reginald Arnulph] Mallock, 6 Creswell Gardens, SW, to Professor [Joseph] Larmor, [Royal Society] | 28 November 1908 |
| NLB/43/205 | Copy letter from Robert William Frederick Harrison, to [Arnulph Henry Reginald] Mallock, Fellow of the Royal Society | 19 November 1910 |
| NLB/44/409 | Copy letter from Joseph Larmor to [Henry Reginald Arnulph] Mallock FRS | 6 July 1911 |
| NLB/44/362 | Copy letter from Robert William Frederick Harrison to [Henry Reginald] A [Arnulph] Mallock FRS | 27 June 1911 |
| NLB/43/262 | Copy letter from Joseph Larmor, to [Arnulph Henry Reginald] Mallock, Fellow of the Royal Society | 1 December 1910 |
| NLB/46/291 | Copy letter from Robert William Frederick Harrison, to Sir Robert Hadfield, Fellow of the Royal Society | 6 July 1912 |
| NLB/45/553 | Copy letter from Robert William Frederick Harrison to A [Arnulph] Mallock FRS | 26 March 1912 |
| NLB/47/830 | Copy letter from Robert William Frederick Harrison to H [Henry] R [Reginald] A [Arnulph] Mallock FRS | 18 April 2017 |
| NLB/48/564 | Copy letter from Arthur Schuster, to [Henry Reginald Arnulph] Mallock, Fellow of the Royal Society | 26 July 1913 |
| NLB/50/151 | Copy letter from Robert William Frederick Harrison, to [Henry Reginald Arnulph] Mallock, Fellow of the Royal Society | 8 May 1914 |
| NLB/51/90 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Arnulph Mallock FRS | 9 December 1914 |
| 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 |
| RR/17/201 | Referee's report by John William Strutt, 3rd Baron Rayleigh, on a paper [attributed] 'Space described in a given time by a projectile moving in air' by Arnulph Henry Reginald Mallock | 1 March 1907 |
| RR/18/164 | Referee's report by Edmund Taylor Whittaker, on a paper 'Pendulum clocks and their errors' by Henry Reginald Arnulph Mallock | 21 June 1911 |
| RR/21/114 | Referee's report by Charles Chree, on a paper 'On the circulation of the atmosphere' by Henry Reginald Arnulph Mallock | [January 1915] |
| RR/27/102 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'The geometry of insect pairing' by C G Lamb | 9 March 1922 |
| RR/21/115 | Referee's report by John William Strutt, Lord Rayleigh, on a paper 'Fog signals. Areas of silence and greatest range of sound' by Henry Reginald Arnulph Mallock | [October 1914] |
| RR/17/203 | Referee's report by Alfred George Greenhill, on a paper 'Ranges and behaviour of rifled projectiles in air' by Arnulph Henry Reginald Mallock | [June 1907] |
| RR/27/8 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'Further observations on cell-wall structure as seen in cotton hairs' by William Lawrence Balls | 18 March 1922 |
| RR/11/69 | Referee's report by Charles Vernon Boys, on a paper 'Some measures of Young’s modulus for crystals' by Henry Reginald Arnulph Mallock | 12 March 1891 |
| NLB/62/836 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esquire, FRS | 18 May 1922 |
| NLB/59/363 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esquire, FRS | 24 September 1920 |
| RR/17/354 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'A tantulum wave setector and its application in wireless telegraphy and telephony' by L H Walter | May 1908 |
| NLB/59/384 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esquire; 9 Baring Crescent, Exeter | 27 September 1920 |
| RR/18/163 | Referee's report by Edmond Herbert Grove-Hills, on a paper 'Pendulum clocks and their errors' by Henry Reginald Arnulph Mallock | June 1911 |
| RR/21/113 | Referee's report by William Henry Dines, on a paper 'On the circulation of the atmosphere' by Henry Reginald Arnulph Mallock | 25 November 1914 |
| RR/17/320 | Referee's report by Joseph Larmor, on a paper 'Note on the instability of tubes subjected to end pressure, and on the folds in a flexible material' by Henry Reginald Arnulph Mallock | 12 July 1908 |
| RR/27/116 | Referee's report by James Alfred Ewing, on a paper 'The effect of temperature on some of the properties of steel' by Henry Reginald Arnulph Mallock | January 1923 |
| RR/18/165 | Referee's report by David Gill, on a paper 'Pendulum clocks and their errors' by Henry Reginald Arnulph Mallock | July 1911 |
| NLB/59/879 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esquire, FRS | 25 November 1920 |
| RR/17/419 | Referee's report by Richard Tetley Glazebrook, on a paper 'Best conditions for photographic enlargement of small solid objects' by Henry Reginald Arnuth Mallock | February 1909 |
| RR/17/368 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'The elastic limits of iron and steel under cyclical variations of stress' by Leonard Bairstow | 21 May 1909 |
| RR/17/409 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'The flight of a rifled projectile in air' by J B Henderson | 23 February 1909 |
| NLB/62/671 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esquire, FRS | 4 April 1922 |
| NLB/57/792 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor WH [William Henry] Bragg, FRS, CBE | 6 February 1920 |
| NLB/64/431 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esquire, FRS | 11 April 1923 |
| NLB/57/861 | Copy letter from Edwin Deller, Acting Assistant Secretary of the Royal Society; to Professor WH [Sir William Henry] Bragg, FRS, OBE | 25 February 1920 |
| NLB/65/682 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esq., 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/65/805 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esq., FRS | 4 January 1924 |
| NLB/66/224 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock Esq,. FRS | 20 March 1924 |
| NLB/66/262 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; [Henry Reginald Arnulph] Mallock Esq. FRS | 31 March 1924 |
| NLB/67/879 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Henry Reginald Arnulph] Mallock, FRS | 30 March 1925 |
| NLB/69/504 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Arnulph] Mallock Esq., FRS | 17 May 1926 |
| NLB/69/495 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Arnulph] Mallock., FRS | 4 May 1926 |
| NLB/71/334 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Arnulph] Mallock Esq., FRS | 3 April 1928 |
| NLB/72/745 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Arnulph] Mallock Esq., FRS | 2 April 1930 |
| MC/27/243 | Letter from [Arnulph] Mallock, 6 Creswell Gardens, S.W, to The Secretary, Royal Society | 29 October 1912 |
| MS/525/6/10/8 | 'Anti-aircraft range-finders': report by Arnulph Mallock | 31 March 1915 |
| MS/525/6/3/2 | Report by Arnulph Mallock on blast pressures experienced in the neighbourhood of guns | 1 December 1914 |
| RR/11/70 | Referee's report by William Cawthorne Unwin, on a paper 'Note on the instability of India-rubber tubes and balloons when distended by fluid pressure' by Henry Reginald Arnulph Mallock | 17 April 1891 |
| RR/17/200 | Referee's report by Horace Lamb, on a paper [attributed] 'Space described in a given time by a projectile moving in air' by Arnulph Henry Reginald Mallock | 19 February 1907 |
| RR/21/112 | Referee's report by Horace Lamb, on a paper 'Fog signals. Areas of silence and greatest range of sound' by Henry Reginald Arnulph Mallock | 3 July 1914 |
| AP/78/12/1 | Unpublished manuscript, 'Note on copying machinery' by A [Henry Reginald Arnulph] Mallock | November 1912 |
| AP/73/16 | Unpublished paper, 'Some differences in the behaviour of real fluids from that of the mathematical perfect fluid' by A [Henry Reginald Arnulph] Mallock | 4 May 1898 |
| AP/73/16/1 | Unpublished manuscript, 'Some differences in the behaviour of real fluids from that of the mathematical perfect fluid' by A [Henry Reginald Arnulph] Mallock | 4 May 1898 |
| AP/78/12/2 | Unpublished diagrams, copying machinery by Henry Reginald Arnulph Mallock | November 1912 |
| RR/24/84 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'Surface reflexion of earthquake waves' by George Walker Walker | 4 August 1917 |
| AP/78/12 | Unpublished paper, 'Note on copying machinery' by A [Henry Reginald Arnulph] Mallock | November 1912 |
| PP/1/8/2 | Diagrams, shaving and boring of materials by Arnulph Mallock | 1881 |
| PP/3/30 | Paper, 'On curves circumscribing rotating polygons with reference to the shape of drilled holes' by A [Arnulph] Mallock | 1883 |
| PP/13/5/1 | Manuscript, 'Determination of the viscosity of water' by [Arnulph] Mallock | 1888 |
| PP/13/5 | Paper, 'Determination of the viscosity of water' by [Arnulph] Mallock | 1888 |
| PP/13/5/2 | Diagrams, experimental equipment and results by [Arnulph] Mallock | 1888 |
| PP/14/20/1 | Manuscript, 'The physical properties of vulcanised India-rubber' by A [Arnulph] Mallock | 1889 |
| PP/17/29 | Paper, 'Some measures of Young's modulus for crystals, &c' by A [Arnulph] Mallock | 1891 |
| PP/14/20/2 | Diagrams, experimental apparatus and results by A [Arnulph] Mallock | 1889 |
| PP/17/34 | Paper, 'Note on the instability of India-rubber tubes and balloons when distended by fluid pressure' by A [Arnulph] Mallock | 1891 |
| PP/17/34/1 | Manuscript, 'Note on the instability of India-rubber tubes and balloons when distended by fluid pressure' by A [Arnulph] Mallock | 1891 |
| PP/14/20 | Paper, 'The physical properties of vulcanised India-rubber' by A [Arnulph] Mallock | 1889 |
| PP/17/29/1 | Manuscript, 'Some measures of Young's modulus for crystals, &c' by A [Arnulph] Mallock | 1891 |
| PP/17/29/2 | Diagrams, experimental equipment and results by A [Arnulph] Mallock | 1891 |
| PP/17/34/2 | Diagrams, experimental equipment and results by A [Arnulph] Mallock | 1891 |
| PP/1/8 | Paper, 'The action of cutting tools' by A [Arnulph] Mallock | 1881 |
| PP/1/8/1 | Manuscript, 'The action of cutting tools' by A [Arnulph] Mallock | 1881 |
| RR/17/202 | Referee's report by Charles Vernon Boys, on a paper 'Space described in a given time by a projectile moving in air' by Arnulph Henry Reginald Mallock | [April 1907] |
| RR/19/122 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'A standard measuring machine' by P E Shaw | 22 June 1912 |
| RR/28/22 | Referee's report by Henry Reginald Arnulph Mallock, on a paper 'Stability of a viscous liquid contained between two rotating cylinders' by Geoffrey Ingram Taylor | 22 April 1922 |
| PP/23/7 | Paper, 'Insect sight and the defining power of composite eyes' by A [Arnulph] Mallock | 1893 |
| NLB/38/705 | Copy letter from Robert William Frederick Harrison, to [Henry Reginald Arnulph] Mallock, Fellow of the Royal Society | 23 October 1908 |
| NLB/39/165 | Copy letter from Robert William Frederick Harrison to [Henry Reginald] A [Arnulph] Mallock, Fellow of the Royal Society | 4 December 1908 |
| MC/23/284 | Letter from [Henry Reginald Arnulph] Mallock, 6 Creswell Gardens, SW, to the Secretaries, Royal Society | 20 October 1908 |
| NLB/37/415 | Copy letter from Robert William Frederick Harrison to A [Henry Reginald Arnulph] Mallock, Fellow of the Royal Society | 16 March 1908 |
| MC/19/596 | Letter from [Henry Reginald Arnulph] Mallock, 3 Victoria Street, to the Assistant Secretary of the Royal Society | 12 May 1904 |
| MC/19 | Volume 19 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1904 |