| RefNo | Title | Date |
| EC/1868/09 | Clifton, Robert Bellamy: certificate of election to the Royal Society | |
| IM/000890 | Clifton, Robert Bellamy | nd |
| NLB/22/194 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 20 March 1901 |
| IM/005231 | Royal Society Officers circa 1895-1900 | nd |
| IM/Maull/000889 | Clifton, Robert Bellamy | nd |
| NLB/23/1/262 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 17 October 1901 |
| NLB/22/188 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 19 March 1901 |
| NLB/26/48 | Copy letter from Robert William Frederick Harrison to, Professor Robert Bellamy Clifton, Fellow of the Royal Society | 20 January 1903 |
| NLB/4/556 | Copy letter from Herbert Rix, to Professor Robert Bellamy Clifton | 9 July 1890 |
| NLB/3/193 | Copy letter from Herbert Rix, to Dr William Huggins, Fellow of the Royal Society | 9 April 1889 |
| NLB/3/1016 | Copy letter from Herbert Rix, to Mr William Henry Preece | 12 December 1889 |
| NLB/8/293 | Copy letter from 'the Clerk' [Theodore E James], to Messrs Harrison & Sons | 22 September 1893 |
| RR/8/46 | Third referee's report by Robert Bellamy Clifton, on a paper, on a paper 'Researches in spectrum-analysis in connexion with the spectrum of the sun.— No. V' by Joseph Norman Lockyer | nd [1877] |
| NLB/13/472 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society, 3 Bardwell Road, Banbury Road, Oxford | 23 September 1896 |
| NLB/24 | New Letter Book volume 24, copy letters sent from Royal Society administration | 13 February 1902-21 July 1902 |
| NLB/25 | New Letter Book volume 25, copy letters sent from Royal Society administration | 21 July 1902-12 January 1903 |
| RR/15/391 | Referee's report by Robert Bellamy Clifton, on a paper 'The specific heats of metals and the relation of specific heat to atomic weight. Part II.' by William Augustus Tilden | December 1902 |
| NLB/14/846 | Copy letter from Robert William Frederick Harrison, to William Turner Thiselton-Dyer, Professor Robert Bellamy Clifton, and Dr [William] Huggins, Fellows of the Royal Society | 27 May 1897 |
| NLB/17/357 | Copy telegram from Robert William Frederick Harrison, to Robert Bellamy Clifton, [Fellow of the Royal Society], 3 Bardwell Road | [18 October 1898] |
| NLB/15/176 | Copy letter from Robert William Frederick Harrison, to William Turner Thiselton-Dyer, Sir William Huggins, and Professor Robert Bellamy Clifton, Vice President of the Royal Society | 8 July 1897 |
| NLB/15/175 | Copy telegram from Robert William Frederick Harrison, to Lord [Joseph] Lister, Sir John Evans, Sir Edward Frankland, Lord Kelvin [William Thomson], Sir Joseph Dalton Hooker, Sir George Stokes, Lord Rayleigh, William Turner Thiselton-Dyer, Sir William Huggins, and Robert Bellamy Clifton, Fellows of the Royal Society | [8 July 1897] |
| NLB/15/299 | Copy letter from Michael Foster, to Mr Robert Bellamy Clifton, Vice President, Royal Society | 30 July 1897 |
| NLB/15/342 | Copy letter from Theodore E James, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 14 August 1897 |
| NLB/15/354 | Copy letter from Robert Bellamy Clifton, to the President, Comitato Malpighi, Crevalcore | [August 1897] |
| NLB/15/380 | Copy letter from Theodore E James, to Professor Richard Bellamy Clifton, Fellow of the Royal Society | 6 September 1897 |
| NLB/24/382 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, [Fellow of the Royal Society] | 6 May 1902 |
| NLB/22/141 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 11 March 1901 |
| NLB/22/52 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 21 February 1901 |
| NLB/22/147 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 12 March 1901 |
| NLB/16/875 | Copy letter from Arthur William Rucker, to Mr Francis Galton, Fellow of the Royal Society, 42 Rutland Gate, S.W. | 24 June 1898 |
| NLB/22/282 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 3 April 1901 |
| NLB/23/1/505 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 22 November 1901 |
| NLB/22/614 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 12 June 1901 |
| NLB/15/809 | Copy letter from Arthur William Rucker, to the Secretary to the Board of Trade, Whitehall, S.W. | 13 December 1897 |
| NLB/22/8 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 11 February 1901 |
| NLB/22/73 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 26 February 1901 |
| NLB/22/120 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 7 March 1901 |
| NLB/22/129 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 8 March 1901 |
| NLB/22/40 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 18 February 1901 |
| NLB/22/121 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 7 March 1901 |
| NLB/22/93 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 1 March 1901 |
| NLB/21/574 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 12 December 1900 |
| NLB/22/240 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 29 March 1901 |
| NLB/22/162 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 15 March 1901 |
| NLB/22/271 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 3 April 1901 |
| NLB/21/716 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 16 January 1901 |
| NLB/22/233 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 28 March 1901 |
| NLB/22/263 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 1 April 1901 |
| NLB/22/267 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 2 April 1901 |
| NLB/27/72 | Copy telegram from an unknown correspondent, to Robert Bellamy Clifton, [Fellow of the Royal Society], 3 Bardwell Road, Banbury Road, Oxford | [25 June 1903] |
| NLB/22/450 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 16 May 1901 |
| NLB/22/382 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 3 May 1901 |
| NLB/21/659 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 4 January 1901 |
| NLB/22/604 | Copy letter from Arthur [William] Rucker, to Robert Bellamy Clifton, [Fellow of the Royal Society] | 11 June 1901 |
| NLB/22/466 | Copy letter from [Arthur William] Rucker, to [Professor Robert Bellamy] Clifton, [Fellow of the Royal Society] | 20 May 1901 |
| NLB/25/664 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society] | 5 December 1902 |
| NLB/22/489 | Copy letter from Arthur [William] Rucker, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 22 May 1901 |
| NLB/22/620 | Copy letter from Arthur [William] Rucker, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society] | 14 June 1901 |
| NLB/22/632 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 18 June 1901 |
| NLB/21/728 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 19 January 1901 |
| NLB/21/812 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 7 February 1901 |
| NLB/22/734 | Copy letter from Arthur William Rucker, to [Robert Bellamy] Clifton, [Fellow of the Royal Society] | 8 July 1901 |
| NLB/22/788 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 16 July 1901 |
| NLB/24/117 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | [March 1902] |
| NLB/22/787 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 17 July 1901 |
| NLB/23/1/345 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 29 October 1901 |
| NLB/23/1/445 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 13 November 1901 |
| NLB/23/2/103 | Copy letter from Alfred Bray Kempe, to Professor Andrew Russell Forsyth, Chairman of the Mathematic Committee and other Sectional Committee Chairmen | 29 June 1901 |
| NLB/23/1/246 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 16 October 1901 |
| NLB/23/1/456 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 15 November 1901 |
| NLB/24/52 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 21 February 1902 |
| NLB/23/1/285 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 21 October 1901 |
| NLB/24/716 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 25 June 1902 |
| NLB/23/1/576 | Copy telegram from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society], 3 Bardwell Road, Oxford | [6 December 1901] |
| NLB/23/1/446 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 14 November 1901 |
| NLB/25/217 | Copy letter from Joseph Larmor, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society] | 23 September 1902 |
| NLB/23/1/333 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Cilfton, Fellow of the Royal Society | 25 October 1901 |
| NLB/23/1/429 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 11 November 1901 |
| NLB/23/1/516 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 25 November 1901 |
| NLB/23/1/373 | Copy letter from an unknown correspondent, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 2 November 1901 |
| NLB/23/2/395 | Copy letter from Robert William Frederick Harrison, to Professor Harry Marshall Ward, Fellow of the Royal Society, and others | 11 November 1903 |
| NLB/23/1/561 | Copy letter from Robert William Frederick Harrison, to Robert Bellamy Clifton, Fellow of the Royal Society | 3 December 1901 |
| NLB/23/1/508 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 23 November 1901 |
| NLB/24/25 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | [February 1902] |
| NLB/23/1/711 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society] | [8 January 1902] |
| NLB/23/1/723 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 9 January 1902 |
| NLB/24/31 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | [February 1902] |
| NLB/23/1/712 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 8 January 1902 |
| NLB/24/129 | Copy letter from unknown correspondent, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | March 1902 |
| NLB/24/114 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 3 March 1902 |
| NLB/25/2 | Copy letter from Joseph Larmor to Professor Robert Bellamy Clifton, [Fellow of the Royal Society], Chairman of the Physics Committee | [July] 1902 |
| NLB/27/240 | Copy letter from Joseph Larmor, to Robert Bellamy Clifton, [Fellow of the Royal Society] | 23 July 1903 |
| NLB/25/688 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 9 December 1902 |
| NLB/25/110 | Copy letter from Joseph Larmor, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society] | 11 August 1902 |
| NLB/26/234 | Copy telegram from Robert William Frederick Harrison to, [Robert Bellamy] Clifton, Bardwell Road, Banbury Road, Oxford | [February 1903] |
| NLB/24/592 | Copy letter from Robert William Frederick Harrison, to Robert Bellamy Clifton, Fellow of the Royal Society | 5 June 1902 |
| NLB/24/474 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 23 May 1902 |
| NLB/24/627 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 10 June 1902 |
| NLB/26/599 | Copy letter from Robert William Frederick Harrison to, Professor Robert Bellamy Clifton, Fellow of the Royal Society | 28 April 1903 |
| NLB/27/57 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 24 June 1903 |
| NLB/25/730 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society, Oxford | 16 December 1902 |
| NLB/25/658 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 4 December 1902 |
| NLB/25/807 | Copy letter from an unknown correspondent, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 6 January 1903 |
| NLB/25/796 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 5 January 1903 |
| NLB/25/838 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 9 January 1903 |
| NLB/27/149 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 11 July 1903 |
| NLB/27/346 | Copy letter from A H White, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 15 August 1903 |
| NLB/26/806 | Copy telegram from Royal Society to, [Robert Bellamy] Clifton, Fellow of the Royal Society, 3 Bardwell Road, Banbury Road, Oxford | [June 1903] |
| NLB/27/359 | Copy letter from A H White, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 20 August 1903 |
| NLB/27/345 | Copy letter from A H White, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 15 August 1903 |
| NLB/27/471 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 2 October 1903 |
| NLB/26/612 | Copy letter from Robert William Frederick Harrison to, Professor Robert Bellamy Clifton, Fellow of the Royal Society | 29 April 1903 |
| NLB/26/807 | Copy letter from Joseph Larmor to, [Robert Bellamy] Clifton, Fellow of the Royal Society | 4 June 1903 |
| NLB/27/649 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 10 November 1903 |
| NLB/27/586 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 23 October 1903 |
| NLB/27/828 | Copy letter from an unknown correspondent, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 7 December 1903 |
| NLB/44/410 | Copy letter from Joseph Larmor to Professor R [Robert] B [Bellamy] Clifton FRS | 7 July 1911 |
| NLB/46/772 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 1 November 1912 |
| NLB/47/23 | Copy letter from Robert William Frederick Harrison to Professor R [Robert] B [Bellamy] Clifton FRS | 14 November 1912 |
| NLB/50/248 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 29 May 1914 |
| NLB/54/168 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [Robert Bellamy] Clifton, FRS | 23 February 1917 |
| NLB/23/1 | Copy letters sent from Royal Society administrative staff and officers | 2 August 1901-12 February 1902 |
| RR/7/351 | Referee's report by Robert Bellamy Clifton, on a paper 'On the atmosphere as a vehicle of sound' by John Tyndall | 17 March 1874 |
| RR/7/320 | Referee's report by Robert Bellamy Clifton, on a paper 'Spectroscopic observations of the sun' by Joseph Norman Lockyer and G M Seabroke | 8 June 1874 |
| RR/8/139 | Referee's report by Robert Bellamy Clifton, on a paper 'On the spectra of metalloids— Spectrum of Oxygen' by Arthur Schuster | 14 June 1878 |
| RR/10/304 | Second referee's report by Robert Bellamy Clifton, on a paper 'On an experimental verification of the sine law of Malus' by E J Spitta | 10 July 1889 |
| RR/11/32 | Referee's report by Robert Bellamy Clifton, on a paper 'Re-determination of the mass of a cubic inch of distilled water' by H J Chaney | 1891 |
| AP/73/6 | Unpublished paper, 'The conditions which render absolute the readings of the mercurial thermometer' by S A Sworn | 1897 |
| RR/14/100 | Referee's report by Robert Bellamy Clifton, on a paper 'A compensated interference dilatometer' by Alfred Edwin Howard Tutton | 1 April 1898 |
| RR/8/118 | Referee's report by Robert Bellamy Clifton, on a paper 'Researches in spectrum-analysis in connexion with the spectrum of the sun.— No. V' by Joseph Norman Lockyer | 9 July 1878 |
| NLB/55/593 | Copy letter from [Joseph John] Thomson, President of the Royal Society; to [Professor Robert Bellamy] Clifton, FRS | 21 June 1918 |
| RR/7/138 | Referee's report by Robert Bellamy Clifton, on a paper 'On the theory of resonance' by John William Strutt, Lord Rayleigh | 20 January 1871 |
| MS/427/262 | Copy letter from [Michael] Foster, Secretary of the Royal Society; to Prof. [Robert Bellamy] Clifton | 16 February 1883 |
| NLB/5/42 | Copy letter from Herbert Rix, to Professor Arthur William Rücker, Fellow of the Royal Society | 25 February 1891 |
| NLB/23/1/60 | Copy letter from an unknown correspondent, to Professor Robert Bellamy Clifton, Fellow of the Royal Society, Physics and Chemistry Committee | 4 September 1901 |
| NLB/23/1/124 | Copy letter from Arthur William Rucker, to Professor Robert Bellamy Clifton, [Fellow of the Royal Society] | 27 September 1901 |
| NLB/23/1/127 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 28 September 1901 |
| NLB/12/393 | Copy letter from Herbert Rix, to Andrew Ainslie Common, Fellow of the Royal Society, Secretary, Joint Permanent Eclipse Committee, Royal Astronomical Society | 13 February 1896 |
| NLB/27 | New Letter Book volume 27, copy letters sent from Royal Society administration | 15 June 1903- 17 December 1903 |
| NLB/22/3 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 8 February 1901 |
| NLB/22/335 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 25 April 1901 |
| NLB/22/357 | Copy letter from Arthur [William] Rucker, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 30 April 1901 |
| NLB/22/344 | Copy letter from Arthur [William] Rucker, to [Robert Bellamy] Clifton, [Fellow of the Royal Society] | [April 1901] |
| NLB/22/672 | Copy letter from Arthur [William] Rucker, to [Professor Robert Bellamy] Clifton, [Fellow of the Royal Society] | 24 June 1901 |
| NLB/21/739 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society, Chairman of the Physics and Chemistry Committee | 21 January 1901 |
| NLB/21/757 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 24 January 1901 |
| RR/7/254 | Referee's report by Robert Bellamy Clifton, on a paper 'Researches in spectrum analysis in connection with the spectrum of the sun' by J Joseph Norman Lockyer | 16 June 1873 |
| RR/7/338 | Referee's report by Robert Bellamy Clifton, on a paper 'On the refraction of sound by the atmosphere' by Osbourne Reynolds | 1 June 1874 |
| RR/10/87bis | Referee's report by Robert Bellamy Clifton, on a paper 'On the effect of polish on the reflexion of light from the surface of Iceland spar' by C Spurge | 19 January 1887 |
| RR/9/393 | Referee's report by Robert Bellamy Clifton, on a paper 'On the relation between the thickness and the surface tension of liquid films' by Arnold William Reinold and Arthur William Rucker | 16 September 1886 |
| RR/11/98 | Referee's report and letter by Robert Bellamy Clifton, on a paper 'On the focometry of lenses and lens-combinations, and on a new focometer' by Silvanus Phillips Thompson | 1891 |
| RR/12/64 | Referee's report by Robert Bellamy Clifton, on a paper 'On the Newtonian constant of gravitation' by Charles Vernon Boys | 18 July 1894 |
| RR/10/330 | Referee's report by Robert Bellamy Clifton, on a paper 'On the determination of the boiling-point of sulphur, and on a method of standardising platinum resistance thermometers by reference to it.—Experiments made at the Cavendish laboratory, Cambridge' by Hugh Longbourne Callendar and Ernest Howard Griffiths | 20 January 1891 |
| NLB/22/694 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 26 June 1901 |
| NLB/21/807 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 6 February 1901 |
| NLB/23/1/386 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 5 November 1901 |
| NLB/23/1/564 | Copy letter from Robert William Frederick Harrison, to Professor Robert Bellamy Clifton, Fellow of the Royal Society | 4 December 1901 |
| RR/8/111 | Referee's report by Robert Bellamy Clifton, on a paper 'New determination of the mechanical equivalent of heat' by James Prescott Joule | 10 April 1878 |
| RR/8/115 | Referee's report by Robert Bellamy Clifton, on a paper 'Researches in spectrum analysis in connection with the spectrum of the sun' by Joseph Norman Lockyer | 11 March 1878 |
| NLB/22 | New Letter Book volume 22, copy letters sent from Royal Society administration | 8 February 1901-2 August 1901 |
| RR/10/303 | Referee's report by Robert Bellamy Clifton, on a paper 'On an experimental verification of the sine law of Malus' by E J Spitta | 3 July 1889 |
| RR/8/44 | Second referee's report by Robert Bellamy Clifton, on a paper 'Researches in spectrum-analysis in connexion with the spectrum of the sun.— No. V' by Joseph Norman Lockyer | 4 July 1877 |
| RR/8/99 | Referee's report by Robert Bellamy Clifton, on a paper 'Measurements of electrical constants. No. II. On the specific inductive capacities of certain dielectrics. Part I' by J E H Gordon | 19 July 1878 |
| RR/8/101 | Letter from Robert Bellamy Clifton, to George Gabriel Stokes, regarding a paper 'Measurements of electrical constants. No. II. On the specific inductive capacities of certain dielectrics. Part I' by J E H Gordon | 7 August 1878 |
| RR/10/100 | Referee's report by Robert Bellamy Clifton, on a paper 'The influence of stress and strain on the physical properties of matter.—Part I. Elasticity (continued).—The effect of magnetisation on the elasticity and the internal friction of metals' by Herbert Tomlinson | 29 August 1887 |
| RR/10/309 | Detailed referee's report by Robert Bellamy Clifton, on a paper 'On the velocity of transmission through sea-water of disturbances of large amplitude caused by explosions' by Richard Threlfall and John Frederick Adair | nd [1889] |
| NLB/22/113 | Copy letter from Robert William Frederick Harrison, to Professor [Robert Bellamy] Clifton, Fellow of the Royal Society | 6 March 1901 |
| MC/11/64 | Letter from R B [Robert Bellamy] Clifton, Portland Lodge, Park Town, Oxford, to Professor [George Gabriel] Stokes, [Secretary of the Royal Society] | 22 May 1877 |
| MC/11 | Volume 11 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1877-1879 |
| RR/7/253 | Referee's report by Robert Bellamy Clifton, on a paper 'Researches in spectrum analysis in connection with the spectrum of the sun' by J Joseph Norman Lockyer | 13 January 1873 |
| RR/8/65 | Letter from Robert Bellamy Clifton, to Mr White, regarding two papers 'On some hitherto undescribed optical properties of doubly refracting crystals.—Preliminary notice' by Henry Clifton Sorby, and 'On the foci of lines seen through a crystalline plate' by George Gabriel Stokes | 10 August 1877 |
| RR/7/313 | Referee's report by Robert Bellamy Clifton, on a paper 'Researches in spectrum-analysis in connection with the spectrum of the sun - No. III' by Joseph Norman Lockyer | 7 March 1874 |
| RR/7/316 | Referee's report by Robert Bellamy Clifton, on a paper 'Researches in spectrum-analysis in connexion with the spectrum of the sun - No. IV' by Joseph Norman Lockyer | 9 June 1874 |
| RR/8/43 | Referee's report by Robert Bellamy Clifton, on a paper 'Researches in spectrum-analysis in connexion with the spectrum of the sun.— No. V' by Joseph Norman Lockyer | 10 April 1877 |
| RR/8/114 | Letter from Robert Bellamy Clifton, to George Gabriel Stokes, regarding a paper 'Researches in spectrum analysis in connection with the spectrum of the sun' by Joseph Norman Lockyer | 11 March 1878 |
| RR/8/159 | Second referee's report by Robert Bellamy Clifton, on a paper 'Measurements of electrical constants. No. II. On the specific inductive capacities of certain dielectrics. Part I' by J E H Gordon | 12 April 1879 |
| RR/10/15 | Referee's report by Robert Bellamy Clifton, on a paper 'On a perspective microscope' by George James Burch | 15 March 1887 |
| RR/10/308 | Referee's report by Robert Bellamy Clifton, on a paper 'On the velocity of transmission through sea-water of disturbances of large amplitude caused by explosions' by Richard Threlfall and John Frederick Adair | 23 April 1889 |
| RR/10/335 | Referee's report by Robert Bellamy Clifton, on a paper 'Re-determination of the mass of a cubic inch of distilled water' by H J Chaney | 16 September 1890 |
| RR/8/64 | Referee's report by Robert Bellamy Clifton, on two papers 'On some hitherto undescribed optical properties of doubly refracting crystals.—Preliminary notice' by Henry Clifton Sorby, and 'On the foci of lines seen through a crystalline plate' by George Gabriel Stokes | 8 August 1877 |
| MC/14/238 | Letter from [Robert Bellamy] Clifton, Portland Lodge, Park Town, Oxford, to [Michael] Foster, Secretary of the Royal Society | 27 June 1887 |
| MC/14/233 | Letter from [Robert Bellamy] Clifton, Portland Lodge, Park Town, Oxford, to [Herbert] Rix, The Royal Society | 18 June 1887 |
| MC/14 | Volume 14 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1885-1888 |
| MC/19/207 | Letter from [Robert Bellamy] Clifton, 3 Bardwell Road, Banbury Road, Oxford, to Professor [Joseph] Larmor | 12 December 1904 |
| MC/19 | Volume 19 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1904 |