| RefNo | Title | Date |
| MM/12/114 | Letter from Warren de la Rue, 75 Portland Place, to William White | 7 June 1880 |
| MM/12/109 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 6 June 1880 |
| MM/12/96 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 2 April 1880 |
| MM/12/118 | Letter from JR Hind, Twickenham, to Warren de la Rue | 15 June 1880 |
| MM/12/117 | Letter from G B Airy, Playford near Ipswich, to Warren de la Rue | 15 June 1880 |
| MM/12/123 | Letter from Warren de la Rue, 73 Portland Place, to William Spottiswoode | 5 July 1880 |
| MM/12/98 | Letter from William Spottiswoode, Athenaeum, to Warren de la Rue | 26 February 1880 |
| MM/12/99 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 22 March 1880 |
| IM/Maull/001118 | De la Rue, Warren | nd |
| MM/11/27 | 'Report of Warren De La Rue FRS on the proposal to remount the Object Glass of Huyghens' | 22 January 1855 |
| MM/12/120 | Letter from Henry Bessemer, Denmark Hill, to Warren de la Rue | 26 June 1880 |
| MM/12/130 | Letter from William Huggins, Upper Tulse Hill, to Warren de la Rue | 15 September 1880 |
| MM/12/122 | Copy of letter from Warren de la Rue, 73 Portland Place, to David Gill | 5 July 1880 |
| MM/12/125 | Letter from G B Airy, Greenwich, to Warren de la Rue | 7 July 1880 |
| MM/12/126 | Letter from Warren de la Rue to William White | 8 July 1880 |
| MM/12/133 | Letter from William Huggins, Athenaeum, to Warren de la Rue | c.1880 |
| MM/12/134 | Letter from William Huggins, Upper Tulse Hill, to Warren de la Rue | c.1880 |
| MM/14/112 | Comments on the Earth as a 'great electrifying machine', by 'Polaris' | 7 January 1867 |
| MM/12/102 | Letter from G B Airy, Greenwich, to Warren de la Rue | 15 April 1880 |
| MM/12/101 | Letter from Warren de la Rue, 73 Portland Place, to G B Airy | 14 April 1880 |
| MM/12/100 | Letter from G B Airy, Greenwich, to Warren de la Rue | 13 April 1880 |
| MM/11/35 | Letter from the Treasury to the William Spottiswoode, President of the Royal Society | 31 December 1881 |
| MM/12/110 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 6 June 1880 |
| MM/12/113 | Letter from Warren de la Rue, 75 Portland Place, to William Spottiswoode | 7 June 1880 |
| MM/12/97 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 10 February 1880 |
| MM/12/124 | Letter from William Huggins, Upper Tulse Hill, to Warren de la Rue | 7 July 1880 |
| MM/12/105 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 18 May 1880 |
| MM/12/119 | Letter from Warren de la Rue, 73 Portland Place, William White | 20 June 1880 |
| MM/12/121 | Letter from the Duke of Devonshire, Devonshire House, to Warren de la Rue | 28 June 1880 |
| MC/7/138 | Letter from G B [Giovanni Battista] Donati, Paris, to the Royal Society | 12 November 1864 |
| MM/12/127 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 6 August 1880 |
| MM/14/155 | Letter from Warren de la Rue, 110 Bunhill Row, to George Gabriel Stokes | 1 June 1868 |
| MM/12/106 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 24 May 1880 |
| MM/19/114 | Letter from Warren de la Rue to George Gabriel Stokes, Secretary, Royal Society | 19 February 1855 |
| IM/Maull/001119 | De la Rue, Warren | nd |
| EC/1850/10 | Rue, Warren de la: certificate of election to the Royal Society | |
| IM/001120 | De la Rue, Warren | 1858 |
| NLB/1/478 | Copy letter from John Evans, to Warren de la Rue, Fellow of the Royal Society, Chariman of the Kew Committee | 25 June 1887 |
| MC/14/198 | Letter from Warren de la Rue, 73 Portland Place, to the President and Council of the Royal Society | 25 March 1887 |
| NLB/1/487 | Copy letter from Herbert Rix, to Warren de la Rue, Fellow of the Royal Society | 28 June 1887 |
| NLB/10/21 | Copy letter from Theodore E James, to Messrs T De le Rue & Company | 28 August 1894 |
| NLB/19/435 | Copy letter from Robert William Frederick Harrison, to Messrs Dulau & Company | 2 October 1899 |
| MS/427/178 | Copy letter from [William] Spottiswoode, President of the Royal Society; to [Robert Henry] Scott Esq., Meteorological Office | 17 April 1882 |
| MS/427/446 | Copy letter from Warren de la Rue, Chairman of the Kew Committee; to [Thomas Henry] Huxley, President of the Royal Society | [July] 1885 |
| PT/65/1/2 | Plate, eyepiece of telescope by unknown artist | [1862] |
| RR/4/67 | Referee's report by James Challis, on a paper 'On the total solar eclipse of July 18th, 1860, observed at Rivabellosa, near Miranda de Ebro, in Spain' by Warren De La Rue | [1862] |
| RR/7/382 | Referee's report by Warren De La Rue, on a paper 'On polishing the specula of reflecting telescopes' by William Lassell | 25 January 1875 |
| RR/7/169 | Letter from Warren De La Rue, on his paper 'Researches on solar physics - part III' by himself, Balfour Stewart and Benjamin Loewy to the Sceretary of the Royal Society | 23 November 1872 |
| RR/8/16 | Referee's report by William Thomson, 1st Baron Kelvin, on a paper 'Experimental researches on the electric discharge with the chloride of silver battery' by Warren de la Rue and Hugo Muller | 21 November 1877 |
| RR/8/155 | Referee's report by William Thomson, Lord Kelvin, on a paper 'Experimental researches on the electric discharge with the chloride of silver battery' by Warren de la Rue and Hugo Müller | 29 November 1879 |
| RR/8/260 | Referee's report by Warren de la Rue, on a paper 'On the sensitive state of vacuum discharges.—Part II' by William Spottiswoode and John Fletcher Moulton, Baron Moulton | 26 April 1880 |
| RR/8/51 | Referee's report by Warren de la Rue, on a paper 'On a secular variation in the rainfall in connexion with the secular variation in amount of sun-spots' by Charles Meldrum | 2 July 1877 |
| RR/7/168 | Letter from Balfour Stewart, on his paper 'Researches on solar physics - part III' by himself, Warren De La Rue and Benjamin Loewy to the Secretary of the Royal Society | 22 November 1872 |
| RR/9/136 | Referee's report by William Grylls Adams, on a paper 'Experimental researches on the electric discharge with the chloride of silver battery. Part IV' by Warren De La Rue and Hugo Müller | 5 July 1883 |
| RR/8/94 | Referee's report by William Thomson, Lord Kelvin, on a paper 'Experimental researches on the electric discharge with the chloride of silver battery' by Warren de la Rue and Hugo Müller | 3 May 1878 |
| MC/14/71 | Letter from [Henry Jamyn] Brooks, King's Road, to Warren de la Rue | 24 July 1885 |
| MC/14/72 | Letter from Warren de la Rue, 73 Portland Place, to the Secretaries of the Royal Society | 25 July 1885 |
| MS/427/416 | Copy letter from [George Gabriel] Stokes, Secretary of the Royal Society; to [Robert Henry] Scott, Esq, FRS, Secretary of the Meteorological Council | 19 February 1885 |
| MS/427/360 | Copy letter from [Michael] Foster, Secretary of the Royal Society; to the Right Hon. Hugh L. Childers, Chancellor of the Exchequer | [3] May 1884 |
| MS/427/289 | Copy letter from [Michael] Foster, Secretary of the Royal Society; to Leonard Courtney Esq. [M.P, Treasury] | 12 July 1883 |
| MS/427/433 | Cutting of Board of Visitors of the Royal Observatory meeting, Resolution 5 and 6 | 18 June 1885 |
| MS/427/393 | Copy letter from Walter White, Assistant Secretary of the Royal Society; to A. Marth Esq. | 21 November 1884 |
| MS/427/413 | Copy letter from [Michael] Foster, Secretary of the Royal Society; to the Secretary of the Treasury | 19 February 1885 |
| MS/427/445 | Copy letter from [Michael] Foster, Secretary of the Royal Society; to the Principal Clerks H.M. Woods and Forests | 28 July 1885 |
| MS/426/704 | Copy letter from W [William] Sharpey, Secretary of the Royal Society; to W DelaRue | 17 December 1860 |
| PT/65/1/15 | Plate, photograph of eclipse after total obscuration by unknown artist | [1862] |
| MM/12/111 | Letter from David Gill, Cape Observatory, to Warren de la Rue | 6 June 1880 |
| MM/12/132 | Rough draft of a letter from Warren de la Rue to David Gill | c.1880 |
| RR/4/66 | Referee's report by Thomas Romney Robinson, on a paper 'On the total solar eclipse of July 18th, 1860, observed at Rivabellosa, near Miranda de Ebro, in Spain' by Warren De La Rue | 18 July 1860 |
| RR/6/75 | Referee's report by Warren De la Rue, on a paper 'Researches on turacin, an animal pigment containing copper' by Arthur Herbert Church | 13 September 1869 |
| RR/8/206 | Referee's report by Warren de la Rue, on a paper 'On the sensitive state of electrical discharges through rarefied gases' by William Spottiswoode and John Fletcher Moulton, Baron Moulton | 12 June 1879 |
| NLB/11/34 | Copy list of exhibits, photographic exhibition, Imperial [Institute] | [April 1895] |
| RR/6/103 | Letter from Warren De La Rue, to George Gabriel Stokes, regarding a paper 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 5 December 1868 |
| RR/8/15 | Referee's report by William Spottiswoode, on a paper 'Experimental researches on the electric discharge with the chloride of silver battery' by Warren de la Rue and Hugo Muller | 27 August 1877 |
| MC/7/113 | Letter from Warren de la Rue, 110 Bunhill Row, to General [Edward] Sabine, President of the Royal Society | 6 August 1864 |
| PT/65/1/17 | Plate, photograph of first totality of eclipse by unknown artist | [1862] |
| PT/65/1/7 | Plate, 'Photograph of the coloured drawing' by unknown artist | [1862] |
| PT/60/3 | Paper, 'On the resin of Ficus rubiginosa, and a near homologue of benzylic alcohol' by Warren de la Rue and Hugo Müller | [1859] |
| PT/65/1/12 | Plate, photograph of first totality by unknown artist | [1862] |
| RR/7/44 | Referee's report by Warren De La Rue, on a paper 'On the chemical activity of nitrates' by Edmund James Mills | 21 October 1870 |
| PT/65/1/3 | Plate, tangential square seen on glass plate by unknown artist | [1862] |
| PT/65/1/25 | Plate, 'The village of Rivabellosa' by unknown artist | [1862] |
| PT/65/1/8 | Plate, Kew heliograph at Rivabellosa by W [William] G Miller | [1862] |
| PT/65/1/33 | Plate, 'Index map' by unknown artist | [1862] |
| PT/65/1/13 | Plate, 'Photograph shewing the phenomena of totality immediately after total obscuration' by unknown artist | [1862] |
| PT/65/1/24 | Plate, ['Partial phase at 2h 48min 25.6sec GMT'] by unknown artist | [1862] |
| PT/65/1/28 | Plate, ['Copy of a touched photograph shewing the phenomena of totality immediately after total obscuration'] by unknown artist | [1862] |
| PT/65/1/31 | Plate, diagram of first totality prominences by unknown artist | [1862] |
| PT/65/1/16 | Plate, photograph of first totality of eclipse by unknown artist | [1862] |
| PT/65/1/22 | Plate, photographs of prominences during totality of eclipse by unknown artist | [1862] |
| PT/65/1/21 | Plate, photograph of second totality of eclipse by unknown artist | [1862] |
| PT/65/1/14 | Plate, 'No 25 photograph - first totality' by unknown artist | [1862] |
| PT/65/1/5 | Plate, two drawings of eclipse by [Warren de la Rue] | [1862] |
| PT/65/1/9 | Plate, diagram through crosswires by unknown artist | [1862] |
| PT/65/1/4 | Plate, 'Scale of colours with which the prominences were compared' by [Warren de la Rue] | [1862] |
| PT/65/1/18 | Plate, 'No 26 photograph - second totality' by unknown artist | [1862] |
| PT/65/1/1 | Manuscript, 'On the total solar eclipse of July 18th 1860 observed at Rivabellosa, near Miranda de Ebro in Spain' by Warren de la Rue | 30 January 1862 |
| PT/65/1/19 | Plate, 'No 26 photograph - second totality' by unknown artist | [1862] |
| PT/65/1/10 | Plate, positions of micrometer by unknown artist | [1862] |
| PT/65/1/11 | Plate, diagram of nearest approach of centres of sun and moon by unknown artist | [1862] |
| PT/65/1/26 | Plate, 'Total eclipse of July 18th 1860 as seen at Rivabellosa Spain with a 3 inch achromatic immediately after the commencement of totality' by Warren de la Rue | [1862] |
| PT/65/1/20 | Plate, photograph of second totality of eclipse by unknown artist | [1862] |
| PT/65/1/32 | Plate, diagram of second totality prominences by unknown artist | [1862] |
| PT/65/1/6 | Plate, 'Photograph of the coloured drawing' by unknown artist | [1862] |
| PT/65/1/30 | Plate, ['Copy of a touched photograph shewing the phenomena of totality immediately previous to the reappearance of the sun'] by unknown artist | [1862] |
| PT/65/1/29 | Plate, ['Copy of a touched photograph shewing the phenomena of totality one minute after total obscuration'] by unknown artist | [1862] |
| PT/65/1/23 | Plate, ['Partial phase at 3h 3min 53.7sec GMT'] by unknown artist | [1862] |
| MC/6/212 | Letter from Warren de la Rue, London, 110 Bunhill Row, to General [Edward] Sabine, President of the Royal Society | 11 March 1862 |
| PT/65/1/27 | Plate, 'Total eclipse of July 18th 1860 as seen at Rivabellosa Spain with a 3 inch achromatic immediately previous to the end of totality' by Warren de la Rue | [1862] |
| MC/5/264 | Letter from Warren de la Rue, 110 Bunhill Row, London, to [Charles] Richard Weld, [Assistant Secretary of the Royal Society] | 7 November 1856 |
| MC/5 | Volume 5 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1851-1858 |
| MC/6/131 | Letter from Warren de la Rue, Royal Astronomical Society, to Professor [George Gabriel] Stokes, Secretary of the Royal Society | 15 April 1861 |
| MC/6 | Volume 6 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1859-1863 |
| MC/7/24 | Letter from Warren de la Rue, 17 Lewes Crescent, Brighton, to General [Edward] Sabine, [President of the Royal Society] | 24 February 1864 |
| MC/9/363 | Letter from Warren de la Rue, 110 Bunhill Row, to Dr [William] Sharpey, [Secretary of the Royal Society] | 12 April 1872 |
| MC/7 | Volume 7 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1864-1866 |
| MC/8/142 | Letter from T R [Thomas Romney] Robinson, North Great George Street, Dublin, to General [Edward] Sabine, [President of the Royal Society] | 17 February 1868 |
| MC/8/162 | Letter from Warren de la Rue, 110 Bunhill Row, to Professor [George Gabriel] Stokes, [Secretary of the Royal Society] | 31 March 1868 |
| MC/8/302 | Letter from A S [Alexander Stewart] Herschel, Collingwood, Hawkhurst, to the Royal Society | 24 January 1869 |
| MC/8/292 | Letter from [Pierre Jules Cesar] Janssen, Simla, Himalaya, to W [Warren] de la Rue | 2 January 1869 |
| MC/8/311 | Letter from Warren de la Rue, 139 Marina Parade, Brighton, to Professor [George Gabriel] Stokes, Secretary of the Royal Society | 2 February 1869 |
| RR/6/166 | Referee's report by Warren De La Rue, on an addendum to the paper 'Spectroscopic observations of the sun.—No. II' by Joseph Norman Lockyer | 17 April 1869 |
| MC/9/7 | Letter from T R [Thomas Romney] Robinson, Observatory Armagh, to W [Warren] de la Rue | 11 January 1870 |
| MC/8/436 | Letter from T R [Thomas Romney] Robinson, Observatory Armagh, to W [Warren] De La Rue | 28 October 1869 |
| MC/9/66 | Letter from Warren de la Rue, The Observatory, Cranford, Middlesex, to Dr [William] Sharpey, [Secretary of the Royal Society] | 2 May 1870 |
| MC/9/59 | Letter from Warren de la Rue, The Observatory, Cranford, Middlesex, to Sir Edward [Sabine], [President of the Royal Society] | 22 April 1870 |
| MC/9/69 | Letter from Warren de la Rue, The Observatory, Cranford, Middlesex, to Sir Edward [Sabine], [President of the Royal Society] | 6 May 1870 |
| MC/9/60 | Letter from Geo [George] Verdon, 8 Victoria Chambers, Victoria Street, Westminster, to Sir Edwd [Edward] Sabine, President of the Royal Society | 23 April 1870 |
| MC/9/62 | Letter from Warren de la Rue, The Observatory, Cranford, Middlesex, to Sir Edward [Sabine], [President of the Royal Society] | 26 April 1870 |
| MC/9/183 | Letter from B [Balfour] Stewart, Harrow, to [Warren] de la Rue | 27 March 1871 |
| MC/9/319 | Letter from Warren de la Rue, The Observatory, Cranford, Middlesex, to Dr [William] Sharpey and Professor [George Gabriel] Stokes, [Secretaries of the Royal Society] | 30 January 1872 |
| MC/9 | Volume 9 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1870-June 1873 |
| MC/10/66 | Letter from Warren de la Rue, 73 Portland Place, to W [William] Spottiswoode, Treasurer of the Royal Society | 31 January 1874 |
| MC/10/294 | Letter from Warren de la Rue, Paris, to Dr [Joseph Dalton] Hooker, President of the Royal Society | 18 October 1875 |
| MC/10 | Volume 10 of miscellaneous correspondence regarding business matters, sent to the Royal Society | July 1873-1876 |
| MC/11/132 | Letter from Warren de la Rue, 73 Portland Place, to Walter White, [Assistant Secretary of the Royal Society] | 8 December 1877 |
| MC/11/38 | Letter from [the Meteorological Committee], Meteorological Office, 116 Victoria Street, to [Joseph Dalton Hooker], President of the Royal Society and to the Council | 31 March 1877 |
| MC/11/61 | Letter from Warren de la Rue, 73 Portland Place, to the Royal Society | 17 May 1877 |
| MC/11/60 | Letter from E B [Edward Ball] Knobel, The Poplars, 20 Avenue Road, to Warren de la Rue | 16 May 1877 |
| MC/11/115 | Letter from Ch [Charles] Fremantle, Royal Mint, to Warren de la Rue | 5 November 1877 |
| MC/11/179 | Letter from Warren de la Rue, Vice Chairman, Kew Observatory, Richmond, Surrey, to the Secretary of the Royal Society | 7 March 1878 |
| MS/257/1/45 | Letter from George Biddell Airy, Royal Observatory Greenwhich to Warren de la Rue | 10 January 1871 |
| MC/11/265 | Letter from Warren de la Rue, Vice-Chairman, Kew Observatory, Richmond, Surrey, to the Secretary of the Royal Society | 11 November 1878 |
| MC/11/256 | Letter from Warren de la Rue, 73 Portland Place, to Sir Joseph [Dalton] Hooker, President of the Royal Society | 15 October 1878 |
| MC/11/254 | Letter from A [Armand] Fizeau, Paris, to Warren de la Rue, President of the Committee | 1 October 1878 |
| MC/11 | Volume 11 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1877-1879 |
| AP/38/36 | Paper, 'Chemical examination of Burmese naphtha, or Rangoon tar' by Warren de la Rue and Hugo Muller | 1856 |
| MC/12/134 | Letter from Warren de la Rue, 73 Portland Place, to [Walter] White, [Assistant Secretary of the Royal Society] | 27 December 1880 |
| AP/50/2 | Supporting data, 'Heliographical positions' by [Warren] De La Rue, [Balfour] Stewart and [Benjamin] Loewy | 1868 |
| MC/12/234 | Letter from Warren de la Rue, Vice Chairman of the Kew Committee, Kew Observatory, Richmond, Surrey, to [William Spottiswoode], President of the Royal Society | 24 February 1882 |
| MC/12 | Volume 12 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1880-1883 |
| RR/7/167 | Letter from Warren De La Rue, on his paper 'Researches on solar physics - part III' by himself, Balfour Stewart and Benjamin Loewy to the Secretary of the Royal Society | 21 November 1872 |
| RR/7/27 | Referee's report by John Frederick William Herschel, on a paper 'Researches on solar physics - No. II. The positions and areas of the spots observed at Kew during the years 1864, 1865, 1866, also the spotted area the sun's visible disk from the commencement of 1832 up to May 1868' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 4 April 1870 |
| RR/7/166 | Referee's report by William Thomson, Lord Kelvin, on a paper 'Researches on solar physics - part III' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 17 October 1872 |
| RR/7/165 | Referee's report by George Biddell Airy, on a paper 'Researches on solar physics - part III' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 23 May 1872 |
| AP/51/4 | Unpublished paper, 'Researches on solar physics no. II. Account of some recent observations on sunspots made at the Kew Observatory [London]' by Warren de la Rue, Balfour Stewart and Benjamin Loewy | 1868 |
| AP/55/4 | Unpublished paper, 'Researches on solar physics III' by Warren de la Rue, Balfour Stewart and Benjamin Loewy | 1872 |
| MC/8 | Volume 8 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1867-1869 |
| AP/60/2 | Unpublished letter, regarding a solar photograph by [Pierre Jules] Janssen from Warren de la Rue to Walter White | 8 December 1877 |
| PP/2/41 | Paper, 'On the electric discharge with the chloride of silver battery' by Warren De La Rue and Hugo Muller | 1882 |
| PP/3/5 | Paper, 'Description of an apparatus employed at the Kew Observatory, Richmond, for the examination of the dark glasses and mirrors of sextants' by G M [George Mathews] Whipple | 1883 |
| PP/3/5/2 | Supporting photograph, apparatus employed at the Kew Observatory, Richmond, for the examination of the dark glasses and mirrors of sextants by G M [George Mathews] Whipple | 1883 |
| PP/3/5/3 | Figure, apparatus employed at the Kew Observatory, Richmond, for the examination of the dark glasses and mirrors of sextants by unknown artist | 1883 |
| MC/14/199 | Letter from Warren de la Rue, Kew Observatory, Richmond, to the President and Council of the Royal Society | 26 March 1887 |
| MS/257/3/382 | Letter from Warren de la Rue, 110 Bunhill Row to Edward Sabine | 18 March 1872 |
| PT/65/1 | Paper, 'On the total solar eclipse of July 18th 1860 observed at Rivabellosa, near Miranda de Ebro in Spain' by Warren de la Rue | 30 January 1862 |
| RR/4/65 | Referee's report by August Wilhelm von Hofmann, on a paper 'On the resin of ficus rubiginosa, and a new homologue of benzylic alcohol' by Warren De La Rue and Hugo Müller | 25 February 1860 |
| RR/6/101 | Referee's report by John Frederick William Herschel, on a paper 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 14 July 1868 |
| RR/6/102 | Referee's report by John Phillips, on a paper 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 17 August 1868 |
| RR/6/146 | Second referee's report by John Frederick William Herschel, on a paper 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | nd [1868] |
| RR/6/164 | Letter from Charles Pritchard, to Warren De La Rue, regarding a paper 'Spectroscopic observations of the sun.—No. II' by Joseph Norman Lockyer | 16 December 1868 |
| RR/7/28 | Referee's report by William Thomson, Lord Kelvin on a paper 'Researches on solar physics - No. II. The positions and areas of the spots observed at Kew during the years 1864, 1865, 1866, also the spotted area the sun's visible disk from the commencement of 1832 up to May 1868' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 11 June 1870 |
| RR/7/381 | Referee's report by Warren De La Rue, on a paper 'On the atmospheric lines of the solar spectrum, illustrated by a map drawn on the same scale as that adopted by Kirchhoff' by John Baboneau Nickterlien Hennessey | 15 February 1875 |
| MC/14/48 | Letter from Robert Grant, to Warren de la Rue | 18 June 1885 |
| MC/14/81 | Letter from Warren de la Rue, Portland Place, to [Herbert] Rix | 31 October 1885 |
| RR/5/59 | Referee's report by William Thomson, Lord Kelvin, on two papers 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' and 'Researches on solar physics.-No. II. The positions and areas of the spots observed at Kew during the years 1864-66, also the spotted area of the sun's visible disk from the commencement of 1832 up to May 1868' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 1 June 1865 |
| RR/5/264 | Letter from Balfour Stewart, to George Gabriel Stokes, regarding two papers 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' and 'Researches on solar physics.—No. II. The positions and areas of the spots observed at Kew during the years 1864, 1865, 1866, also the spotted area the sun's visible disk from the commencement of 1832 up to May 1868' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 5 July 1865 |
| RR/6/181 | Referee's report by William Thomson, 1st Baron Kelvin, on a paper 'On a method of making a direct comparison of electrostatic with electromagnetic force; with a note on the electromagnetic theory of light' by James Clerk Maxwell, and 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' by Warren De La Rue, Balfour Stewart and Benjamin Loewy | 19 October 1868 |
| PP/3/5/1 | Manuscript, 'Description of an apparatus employed at the Kew Observatory, Richmond, for the examination of the dark glasses and mirrors of sextants' by G M [George Mathews] Whipple | 1883 |
| MC/14/94 | Letter from Warren de la Rue, Chairmain, Kew Observatory, Richmond, to the Secretary of the Royal Society | 27 November 1885 |
| MC/14/217 | Letter from Warren de la Rue, Kew Observatory, to the President and Council of the Royal Society | 31 May 1887 |
| MC/14/59 | Letter from Warren de la Rue, Portland Place, to [Thomas Henry] Huxley | 1 July 1885 |
| MC/14 | Volume 14 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1885-1888 |
| MC/14/100 | Letter from [George Mathews] Whipple, Superintendent, Kew Observatory, Richmond, to the Secretary of the Royal Society | 2 February 1886 |