| RefNo | Title | Date |
| EL/R1/61 | Letter, from William Rastrick to Martin Folkes | 1722 |
| MM/4/64 | Letter from Robert Smith, Cambridge, to Martin Folkes | 22 February 1731/2 |
| L&P/2/26 | Letter, 'An aurora australis, seen 23 Jan 1748/50' from John Martyn to Martin Folkes | 24 January 1750 |
| L&P/2/64 | Letter, 'Of lightning on occasion of the earthquake' from Henry Miles to Martin Folkes | 22 March 1750 |
| RBO/12/59 | 'Account of a human Humerus Ulna and Radius united by Martin Folkes' | 1725 |
| MS/790/78 | Letter from de Kermadee, Paris, Hotel d'Abbeville, rue Gueneguand to Martin Folkes | 14 May 1740 |
| L&P/1/420 | Letter, 'Of experiments made in Holland and Bologna phials' from Martin Folkes to the Royal Society | 1745 |
| L&P/1/320 | Letter, 'Astronomical observations in Jamaica' from James Short to Martin Folkes | 25 November 1744 |
| L&P/1/113 | Letter, 'A continuation of an Abstract of Dr Meighan's treatise of the natures and powers of Bareges's baths and waters; With an enquiry into the cause of the heat of the thermal waters in general' from Edward Milward to Martin Folkes | 1742 |
| MS/790/84 | Printed notice from Pierre-Jean Mariette, Paris, France, to [Martin Folkes] | 1744 |
| L&P/2/131 | Letter, 'Of earthquakes on 4 May & 1 Jul 1747' from Henry Baker to Martin Folkes | 10 May 1750 |
| M/071 | Folkes, Martin | 1740 |
| L&P/1/236 | Letter, 'Concerning the return of de la Condamine and the explorers of Peru' from Rene-Antoine Ferchault de Reaumur to Martin Folkes | 17 December 1743 |
| L&P/1/214 | Letter, 'Of the mathematical principle of reduction' from Jean Welin to Martin Folkes | 1743 |
| L&P/2/53 | Letter, 'Of the Essex steeples (Danbury) struck by lightning' from Smart Lethieullier to Martin Folkes | 27 February 1750 |
| L&P/1/182 | Letter, 'Of the ancient kingdom of Thomond, now County Clare' from C Lucas to Martin Folkes | 15 March 1742 |
| L&P/1/106 | Letter, 'An Abstract of Dr Meighan's treatise of the natures and powers of Bareges's baths and waters; With an enquiry into the cause of the heat of the thermal waters in general' from Edward Milward to Martin Folkes | [1742] |
| L&P/1/44 | Letter of thanks from Pierre de Vigny to Martin Folkes | 2 February 1742 |
| L&P/1/451 | Letter, 'Eels in paste viparous' from James Sherwood to Martin Folkes | 1746 |
| L&P/1/434 | Paper, 'Of some encrushed human bones in the villa Ludovisiae at Rome' by Martin Folkes | 4 December 1745 |
| L&P/2/135 | Letter, 'Digest of various accounts of the earthquake of 8-9 Feb 1749/50' from William Barlow to Martin Folkes | 1750 |
| EL/R1/62 | Letter, from William Rastrick to Martin Folkes | 20 March 1727 |
| L&P/1/21 | Letter from Hans Sloane to Martin Folkes | 07 December 1741 |
| RBO/20/2 | 'Account of two Parhelii observed in London September 17 1736 by Martin Folkes' | 1736 |
| MM/16/41 | Letter from Francois Marie Arouet de Voltaire, Paris, to Martin Folkes | 29 March 1743 |
| CLP/4ii/23/2 | Figure, mock suns by Martin Folkes | 17 September 1736 |
| MM/15/10 | Copy of a letter from Francois Marie Arouet de Voltaire, Paris, to Martin Folkes | 29 November 1743 |
| L&P/1/466 | Letter, 'Of blood movements seen in eels by the naked eye' by W B to Martin Folkes | 11 March 1746 |
| MS/790/120 | Letter from [Sauveur Francois] Morand, to Martin Folkes, London | 10 February 1741 |
| L&P/1/327 | Letter, 'Observations on the purity of Mr Lowndes new salt' from Cromwell Mortimer to Martin Folkes | 5 December 1744 |
| IM/001478 | Folkes, Martin | nd |
| L&P/2/41 | Letter, 'Of the same earthquake' from John Martyn to Martin Folkes | 14 February 1749 |
| MM/17/77 | Letter from Rev HJ Carter to Herbert Rix, Assistant Secretary, Royal Society | 30 July 1895 |
| L&P/2/213 | Letter, 'The model machine made by Mr Salter to shew his pipes for extracting foul air out of ships' from Richard Mead to Martin Folkes | 13 June 1751 |
| NLB/11/403 | Copy letter from Herbert Rix, to Professor Thomas McKenny Hughes, Fellow of the Royal Society | 21 June 1895 |
| NLB/13/412 | Copy letter from Theodore E James, to Michael Foster | 24 August 1896 |
| L&P/1/139 | Letter, 'On the breeding of tail-less poultry' from John Martyn to Martin Folkes | 23 November 1742 |
| L&P/1/219 | Letter, 'An account of the sixth volume of Reaumur's History of Insects' from James Parsons to Martin Folkes | 1743 |
| NLB/52/856 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to S. F. Peckham Esquire;114 Stirling Place, Brooklyn, New York | 2 March 1916 |
| L&P/1/353 | Letter, 'Information concerning the Spanish dominions in North and South America, from 14 years residence there' from Thomas Arnot to Martin Folkes | 10 November 1744 |
| L&P/1/90 | Letter, 'Of a intestinal worm' from Theophilus Lobb to Martin Folkes | 15 April 1742 |
| L&P/2/60 | Letter, 'Of the earthquake of March 8' from James Parsons to Martin Folkes | 15 March 1750 |
| L&P/1/245 | Letter, 'Of a concretion from a horse's stomach' from Walter Bowman to Martin Folkes | 3 January 1743 |
| L&P/2/4/1 | Letter, 'Of an equatorial telescope' from James Short to Martin Folkes | 7 December 1749 |
| L&P/2/56a | Letter, 'Of a marine animal, stela arbroscens' from Robert Dingley to Martin Folkes | 8 March 1750 |
| L&P/1/378 | Letter, 'Electrical experiments' from William Watson to Martin Folkes | 27 March 1745 |
| L&P/1/227 | Letter, 'With the gift of a microscope for viewing water animals' from John Cuffe to Martin Folkes | 17 November 1743 |
| L&P/1/63 | Letters, 'Of the late comet' from W Ramsay, Thomas Wright and John Bevis to Martin Folkes | 25 February 1741 |
| L&P/2/43 | Paper, 'His Dutch book on astronomy, geography, reviewed by Martin Folkes' by Nicholas Struyck | 1749 |
| L&P/2/54a | Letter, 'Of the earthquake in London of March 8 1749/50' from Daniel Peter Layard to Martin Folkes | 8 March 1750 |
| L&P/2/80 | Letter, 'Of the same meteor' from Henry Baker to Martin Folkes | 12 December 1750 |
| L&P/1/215 | Letter, 'On the solution of certain mathematical problems' from Jean Welin to Martin Folkes | 1743 |
| L&P/1/191/1 | Letter, 'On Trembley's polype' from Charles Lennox, Duke of Richmond to Martin Folkes | 24 May 1743 |
| L&P/1/198/1 | Letter, 'Of the natural history of the rhinoceros' from James Parsons to Martin Folkes | 1743 |
| L&P/1/411 | Letter, 'On the specific gravity of diamonds' from John Ellicott to Martin Folkes | 3 July 1745 |
| L&P/2/12 | Letter, 'On the diameter of the Moon' from James Short to Martin Folkes | 21 December 1749 |
| L&P/1/183 | Letter, 'Gift of a copy of the 6th part of his History of Insects' from Rene-Antoine Ferchault de Reaumur to Martin Folkes | 26 January 1743 |
| L&P/2/116 | Letter, 'Recommends Mr Charles Walmesley for election into the R.S.; speaks of earthquake in London; & of copies of his Nat. Hist.; of a burning-mirror of 360 small looking glasses' from George Louis Leclerc, Count of Buffon to Martin Folkes | 6 April 1750 |
| L&P/2/59 | Letter, 'Of the earthquake of March 8' from Michael Russell to Martin Folkes | 15 March 1750 |
| L&P/2/73 | Letter, 'Of the earthquake shock of March 18' from Peter Newcombe to Martin Folkes | 29 March 1750 |
| MS/790/91 | Letter from Pierre Louis Moreau de Maupertuis, Paris, France, to Martin Folkes, London | 6 April 1744 |
| L&P/1/223/1 | Letter, 'Concerning a zoophyte of Barbadoes' from Griffith Hughes to Martin Folkes | 3 November 1743 |
| L&P/1/428 | Letter 'Of foetal bones voided per anum' from James Simon to Martin Folkes | 17 September 1745 |
| L&P/2/133 | Letter, 'Of the periodical appearences of locusts' from Peter Collinson to Martin Folkes | 1750 |
| L&P/1/345/1 | Letter, 'Description of a new fungus' from John Martyn to Martin Folkes | 21 January 1745 |
| L&P/2/58 | Paper, 'Of the earthquake in London of March 9 1747/50' by Martin Folkes | 8 March 1750 |
| L&P/1/179/1 | Paper, 'On the freshwater polyp' by Martin Folkes | 24 March 1742 |
| L&P/1/290/1 | Letter, 'Of a white owl' from George Edwards to Martin Folkes | 1744 |
| L&P/2/140 | Letter, 'Of the earthquake of 2 Apl 1750' from John Seddon to Martin Folkes | 10 June 1750 |
| L&P/2/143 | Letter, 'Of a Dutch dwarf' from Henry Baker to Martin Folkes | 13 June 1750 |
| L&P/1/179 | Paper, 'On the freshwater polyp' by Martin Folkes | 24 March 1742 |
| L&P/1/459 | Letter, 'On the water of bitter almonds' from Henry Baker to Martin Folkes | 6 March 1746 |
| L&P/1/434/1 | Paper, 'Of some encrushed human bones in the villa Ludovisiae at Rome' by Martin Folkes | 4 December 1745 |
| L&P/1/403 | Letter, 'Of preserving birds; of magnets' from Rene-Antoine Ferchault de Reaumur to Martin Folkes | 4 May 1745 |
| L&P/2/127 | Letter, 'On inscriptions found at Tunis' from James Theobald to Martin Folkes | 10 May 1750 |
| L&P/1/277 | Plate, 'Of the moon, an engraved plate' from James Ferguson to Martin Folkes | 1745 |
| L&P/1/351 | Letter, 'Of a monstrous calf & of seeds of St Igantius's bean' from Stephen Hales to Martin Folkes | 1744 |
| L&P/2/100 | Letter, 'Of a Georgian telescope made by Richard Eggleston of York' from Francis Drake to Martin Folkes | 1750 |
| L&P/2/130 | Letter, 'On experiments of the globe (improved orrery)' from John Neale to Martin Folkes | 10 May 1750 |
| L&P/1/396 | Letter, 'On ipecacuanha' from Phillip Friedrich Gmelin to Martin Folkes | 1745 |
| L&P/2/28a | Letter, 'A memoir as to the solvent properties of an E. Indian plant' from Michael Bermingham to Martin Folkes | 1 September 1748 |
| L&P/1/430 | Letter, 'Of certain cases of small-pox' from Pierce Dod to Martin Folkes | 10 August 1745 |
| L&P/1/381 | Letter,'Concerning the poles of magnets being variously placed' from Gowin Knight to Martin Folkes | 3 April 1745 |
| L&P/2/48 | Letter, 'The aurora borealis of Feb 16' from John Martyn to Martin Folkes | 21 February 1750 |
| L&P/2/203 | Letter, 'Meteorological observations made at Solekamskii [Solikamsk], Siberia' from Gregori Demidoff to Martin Folkes | 16 May 1751 |
| L&P/2/168 | Letter, 'Of the earthquake on Sept 30' from William Folkes to Martin Folkes | 1750 |
| L&P/2/117 | Letter, 'A specimen of Orbis piscis echinatus' from Henry Baker to Martin Folkes | 26 April 1750 |
| L&P/2/214 | Letter, 'Account of Capt. Ellis's voyage to Hudson's Bay' from S Hales to Martin Folkes | 8 June 1751 |
| L&P/2/280 | Letter, 'Letter to the President of the Royal Society' from Paolo Frisi to Martin Folkes | 31 December 1751 |
| L&P/2/52 | Letter, 'On election as FRS' from Jean Charles Folard to Martin Folkes | 6 March 1750 |
| L&P/2/36 | Letter, 'Of the earthquake felt in London' from Henry Baker to Martin Folkes | 8 February 1750 |
| L&P/2/30 | Letter, 'Lunar eclipse of 23 Dec 1749 and solar eclipse of 18 Jan 1750, observed at Rome' from Christopher Maire to Martin Folkes | 14 January 1750 |
| MS/790/123 | Letter from F. L. [Captain Frederic Lewis] Norden, St Helene near Schrewsburry, to [Martin Folkes] | 18 July 1740 |
| L&P/1/112 | Letter, 'Of Indian Corn fruiting in the city' from Theophilus Lobb to Martin Folkes | 30 June 1742 |
| MS/790/61 | Letter from Marie Thérèse Rodet Geoffrin, Paris, to Martin Folkes, President of the Royal Society, London | 28 September 1742 |
| L&P/2/58a | Letter, 'Of the earthquake of March 8' from John Martyn to Martin Folkes | 14 March 1750 |
| MS/790/40 | Letter from Henri-Louis Duhamel du Monceau, Paris, to [Martin Folkes] | 1 September 1742 |
| IM/001479 | Folkes, Martin | c.1741 |
| L&P/2/55a | Letter, 'Of the earthquake in London of March 8 1749/50' from Roger Pickering to Martin Folkes | 8 March 1750 |
| L&P/1/385 | Paper, 'A print shown to the RS of a Chinese magnet (30lbs 5 oz in weight). It belongs to the King of Portugal & was armed & set by Wm Duguid FRS much in the same manneras one for the Duke of Devonshire which now belongs to lord Charles Cavendish' by Martin Folkes | 25 April 1745 |
| MM/4/17 | Letter from Martin Folkes, President, Royal Society, on the appointment of Vice-Presidents | 1751 |
| DM/5/100 | A list of benefactors to the Library, to the value of £5 or upwards at one time | c.1737 |
| IM/001481 | Folkes, Martin | 1833 |
| MS/790/124 | Letter from F. L. [Captain Frederic Lewis] Norden, Portsmouth, to [Martin Folkes] | 2 October 1740 |
| MS/790/151 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 13 May 1740 |
| L&P/1/38 | Letter, 'On ventilating the holds of ships' from Stephen Hales to Martin Folkes | 23 January 1741 |
| L&P/2/65 | Letter, 'Of the earthquake of March 8' from William Stukeley to Martin Folkes | 13 March 1750 |
| MM/20/51 | Newspaper cuttings on the Royal Society | 1732-1739, 1820 |
| MS/790/50 | Copy letter from Martin Folkes, President of the Royal Society, London, to Richard Bentley | 23 February 1742 |
| L&P/2/171 | Letter, 'Of the same earthquake' from John Nixon to Martin Folkes | 22 October 1750 |
| L&P/1/391 | Letter, 'De Radice ipecacuanhae' from Phillip Friedrich Gmelin to Martin Folkes | 1745 |
| L&P/1/1 | Letter, 'Du jardin du roy le 18 Juillet 1741' from Georges L L Buffon to Martin Folkes | 18 July 1741 |
| L&P/1/91 | Letter, 'On falling dew and further observations on falling crystals' from Leonard Stocke to Martin Folkes | 26 April 1742 |
| L&P/1/285 | Letter, 'Concerning the plague' from Theophilus Lobb to Martin Folkes | 26 April 1744 |
| L&P/1/76 | Letter, 'Some observations on Mr Sutton's invention to extract the foul air from the well and other parts of ships' from William Watson to Martin Folkes | 4 December 1741 |
| L&P/1/43 | Letter, 'Of the north coast of Britain and errors in maps between Dunsby Head and Faro Point' from Colin MacLaurin to Martin Folkes | 26 January 1741 |
| L&P/1/413 | Letter, 'Of the heat in animals' from Cromwell Mortimer to Martin Folkes | 20 June 1745 |
| L&P/2/51 | Letter, 'An account of discoveries at Portici' from Smart Lethieullier to Martin Folkes | 21 February 1750 |
| L&P/2/52a | Letter, 'Of the earthquake in London of March 8 1749/50' from Henry Baker to Martin Folkes | 8 March 1750 |
| L&P/1/376 | Letter, 'Of an extraordinary large elephant's tooth found at Munslet, Norfolk, over 11 lbs in weight' from Henry Baker to Martin Folkes | 26 March 1745 |
| MS/790/13 | Letter from Jean Baptiste Boyer, Paris, to [Martin Folkes] | 9 November 1741 |
| MS/790/56 | Letter from Claudio Fromond, Pisa, to [Martin Folkes?] | 26 April 1737 |
| MS/790/42 | Letter from Petrus Filenius. Paris, to [Martin Folkes] | 1 January 1738 |
| MS/790/36 | Letter from Johann Gabriel Doppelmayr, Nuremberg, to Martin Folkes, Vice-President of the Royal Society, London | 16 May 1736 |
| MS/790/8 | Letter from Charles Beauclerk, 2nd Duke of St. Albans, Cranborne, to [Martin Folkes] | 4 August 1743 |
| MS/790/45 | Letter from Henry Finch, Albury [near Guildford in Surrey] to [Martin Folkes?] | 28 January 1744 |
| MS/790/59 | Letter from Marie Thérèse Rodet Geoffrin, to [Martin Folkes] | [1742] |
| MS/790/66 | Letter from Henry Henrichsen FRS, Copenhagen, to Martin Folkes | 31 December 1743 |
| MS/790/34 | Letter from Jean-Jacques d'Ortous de Mairan, Paris, to [Martin Folkes] | 2 January 1744 |
| MS/790/90 | Letter from Pierre Louis Moreau de Maupertuis, Paris, France, to [Martin Folkes] | 12 February 1740 |
| MS/790/54 | Letter from J.B. de Freval, Margaret Street behind Oxford Market, corner house but one of Portland Street, to Martin Folkes | 20 February 1744 |
| MS/790/24 | Letter from Alexis Claude Clairaut, Paris, to [Martin Folkes] | 5 September 1742 |
| MS/790/38 | Letter from Johann Gabriel Doppelmayr, Nuremberg, to Martin Folkes, Vice-President of the Royal Society, London | 23 May 1741 |
| MS/790/30 | Letter from William Clavering-Cowper, 2nd Earl Cowper, Moat, near Canterbury, to [Martin Folkes] | 16 February 1741 |
| MS/790/5 | Letter from John Bacon, Codenham, near Ipswich, to [Martin Folkes] | 16 August 1740 |
| MS/790/41 | Letter from Etienne-Francois Dutour de Salvert, Paris, to Martin Folkes, Queen Square, near Ormond Street, London | 18 August 1740 |
| MS/790/52 | Letter from William Folkes, Newton, to Martin Folkes, Queen Square, near Ormond Street, London | 11 August 1742 |
| MS/790/51 | Copy letter from Martin Folkes, London, to [an unknown correspondent] | 22 March 1743 |
| MS/790/49 | Copy letter from Martin Folkes, London, to [an unknown correspondent] | 11 June 1741 |
| EL/F2/39 | Letter, from Martin Folkes to Cromwell Mortimer | 27 October 1737 |
| L&P/2/55 | Letter, 'Of Euler's letter of the acceleration of the periodical motion, diurnal & annual, of the earth' from Caspar Wetstein to Martin Folkes | 17 February 1750 |
| EL/B2/81 | Letter, from Henry Bradbury to Martin Folkes, dated at Hillington | 11 March 1720 |
| L&P/1/449 | Letter, 'Of the light from mercury in glass tubes caused by electricity' from Abraham Trembley to Martin Folkes | 4 February 1746 |
| L&P/2/11 | Letter, 'Eclipse of the moon of 12 Dec 1749' from William Elstobb to Martin Folkes | 15 December 1749 |
| MS/790/68 | Letter from the Earl of Pembroke, to Martin Folkes, Queen's Square, London | 9 February 1749 |
| MS/790/9 | Letter from Charles Beauclerk, 2nd Duke of St. Albans, Windsor, to [Martin Folkes] | 14 August 1743 |
| MS/790/118 | Letter from Secondat [Jean Baptiste, Baron Secondat de Montesquieu], Bordeaux, France, to [Martin Folkes] | 31 March 1744 |
| L&P/1/109 | Letter, 'On some extraordinary effects in lightning' from Robert James Petre to Martin Folkes | 24 June 1742 |
| L&P/2/6 | Letter, 'Of a meteor' from Thomas Barker to Martin Folkes | 15 September 1749 |
| EL/M3/50 | Letter, from Colin MacLaurin to Martin Folkes, dated at Edinburgh | 12 May 1737 |
| L&P/1/176 | Letter and paper, 'An account of his treatise on fluxions part II' by Colin MacLaurin to Martin Folkes | 5 February 1743 |
| L&P/2/145 | Letter, 'Of a noise in the air heard in Norwich' from Henry Baker to Martin Folkes | 14 June 1750 |
| L&P/2/156 | Letter, 'Accounts of aurora boreales lately seen' from Henry Baker to Martin Folkes | 18 June 1750 |
| EL/L6/19 | Letter, from Colin McLaurin to Martin Folkes, dated at Edinburgh | 19 April 1729 |
| L&P/2/76 | Letter, 'On the causes of earthquakes' from William Stukeley to Martin Folkes | 26 March 1750 |
| L&P/2/169 | Letter, 'Of earthquakes in Suffolk & Leicestershire' from James Burrow to Martin Folkes | 2 October 1750 |
| RBO/11/107 | Account of Leeuwenhoek's microscopes and how he made them by Martin Folkes | 1723 |
| L&P/2/126 | Letter, 'A tumour in the bladder successfully extripated' from Joseph Warner to Martin Folkes | 7 May 1750 |
| L&P/2/42 | Letter, 'Of Essex steeples struck by lightning' from Abraham Trembley to Martin Folkes | 11 February 1750 |
| L&P/2/141 | Letter, 'On his travels through Italy' from Robert More to Martin Folkes | 5 June 1750 |
| L&P/1/2 | Letter, 'On certain small water animals (hydra)' from Charles Bentinck to Martin Folkes | 15 September 1741 |
| L&P/1/422/1 | Letter, 'The ancient Bridewell of Norwich; of an inscribed Roman metal plate found at Menteu, 14 miles from Turin & of a vast bone in Norwich' from Henry Baker to Martin Folkes | 30 October 1745 |
| L&P/1/244 | Letter, 'Of Malin, the Ostrocolla; the farina of the red lily; of worms in knutty corn' from John Tuberville Needham to Martin Folkes | 11 August 1743 |
| CLP/4ii/23 | Paper, 'An observation of three mock suns seen in London, Friday September 17 1736' by Martin Folkes | 17 September 1736 |
| L&P/1/441 | Letter, 'The author shows an Italian grain, from J Bruni - Meliga Rossa' from Henry Baker to Martin Folkes | 16 January 1746 |
| CLP/4ii/23/1 | Manuscript, 'An observation of three mock suns seen in London, Friday September 17 1736' by Martin Folkes | 17 September 1736 |
| L&P/1/402 | Letter, 'Of a lady whose clothes sparkled' from Henry Miles to Martin Folkes | 19 May 1745 |
| L&P/1/103 | Letter, 'Of Indian Corn ripening in Paul's Alley in Aldersgate' from Theophilus Lobb to Martin Folkes | 31 May 1742 |
| L&P/1/421 | Letter, 'Improvements in cyder & perry' from Henry Miles to Martin Folkes | 1745 |
| EL/L6/18 | Letter, from Colin McLaurin to Martin Folkes, dated at Edinburgh | 26 February 1726 |
| L&P/1/30 | Letter, 'Of an antidote to the Indian poison in the West Indies [Caribbean]' from Edward Milward to Martin Folkes | [1742] |
| L&P/1/232 | Letter, 'Of the restoration of the meridian line in the church of St Sulpice, Paris' from Pierre Charles Le Monnier to Martin Folkes | 15 November 1743 |
| L&P/1/432 | Letter, 'Abstract of an Italian treatise on the ancient city of Industria, published in 1745 (Roman inscriptions &c), written by Giov. Paolo Recolvi & Antonio Rivantella' from David Erskine Baker to Martin Folkes | 1745 |
| MS/703 | Index of papers read before the Royal Society between 1660 and 1717 | 1660-1716 |
| L&P/1/335 | Letter, 'On the virtues of musk in convulsive disorders' from Edward Wilmot on behalf of J Wall and A Reid to Martin Folkes | 27 November 1744 |
| P/0043 | Portrait of Martin Folkes | 1741 |
| CLP/16/48 | Paper, 'An examination of the Roman and Greek foot, as well as of several other Italian measures, compared with the English foot' by Martin Folkes | 1735 |
| CLP/2/17 | Paper, 'Some account of Mr Lewenhoecks curious microscopes, lately presented to the Royal Society' by Martin Folkes | [1724] |
| MS/790/101 | Letter from [John Montagu, 2nd Duke of Montagu], Boughton, [Northamptonshire], to Martin Folkes | 16 October 1742 |
| MS/704 | Index of Papers read before the Royal Society between 1684 and 1741. | 1741-1750 |
| RBO/14/52 | 'Concerning the roots of equations with the demonstration of other rules in algebra in a second Letter from Colin Maclaurin, Professor of Mathematicks in the University of Edinburgh, to Martin Folkes | 1729 |
| MS/790/80 | Letter from [Pierre Charles?] Le Monnier, to Martin Folkes, London | 26 July 1742 |
| MC/19/561 | Letter from Miss E Jessica Lewis, 42 St Julian's Road, to the Librarian of the Royal Society, London | 31 October 1904 |
| MC/16 | Volume 16 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1893-1896 |
| MS/790/167 | Letter from [Frederick Christian?] Danneskiold Samsoe, Paris, [France], to [Martin Folkes] | 24 October 1744 |
| MS/790/82 | Letter from Antonio Leprotti, Rome, to [Martin Folkes] | 6 August 1734 |
| MS/790/170 | Letter from Baron Sohlenthal, Hamburg, [Germany], to Martin Folkes | 20 April 1744 |
| MC/19 | Volume 19 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1904 |
| MS/790/72 | Letter from Thomas Hill, to Martin Folkes, Queen's Square near Holbourne [Holborn], London | 1 September [1742?] |
| MS/790/19 | Letter from David Casley to Martin Folkes, Queens Square, by Ormond Street | 10 April 1744 |
| MS/790/3 | Letter from Mohammed Ben Ali Abgali to Martin Folkes | 1726 |
| MS/790/46 | Copy letter from Martin Folkes, to [Charles Lennox, 2nd Duke of Richmond and Duke of Aubigny] | 2 September 1740 |
| MS/790/55 | Letter from Claudio Fromond, Pisa, to [Martin Folkes?] | March 1736 |
| MS/790/73 | Letter from Benjamin Hoadly, Bishop of Winchester, to Martin Folkes, Queen's Square | 27 June 1743 |
| MS/790/65 | Letter from Philips Glover FRS, Wispinton [Wispington] near Horncastle, Lincolnshire, to Martin Folkes, Queens Square, Bloomsbury, London | 14 May 1737 |
| MS/790/67 | Letter from Henry Herbert 9th Earl of Pembroke FRS, to Martin Folkes | 5 February 1741 |
| MS/790/81 | Letter from Sarah Lennox, Duchess of Richmond, Goodwood, to Martin Folkes, Queen's Square, London | 4 January 1744 |
| MS/790/10 | Letter from Beaupré Bell junior, Beaupré Hall, Norfolk, to Martin Folkes, Hillington, near Lynn, Norfolk | 21 August 1732 |
| MS/790/12 | Letter from Walter Bowman, to Martin Folkes, Queen’s Square, Ormond Street | 26 April 1743 |
| MS/790/17 | Letter from James Burrow to [Martin Folkes] | 3 December 1743 |
| MS/790/27 | Letter from Antonio Cocchi, Florence, to [Martin Folkes] | 26 October 1737 |
| MS/790/48 | Copy letter from Martin Folkes to Phillips Glover | 4 May 1737 |
| MS/790/75 | Letter from W Huchenson, Channel Row, Westminster, to [Martin Folkes] | 11 February 1743 |
| MS/790/71 | Letter from Thomas Hill, Whitehall, to Martin Folkes | 20 January [1742?] |
| MS/790/114 | Letter from [Baron de La Brède, Charles de Secondat] Montesquieu, Paris, France, to [Martin Folkes] | 17 February 1740 |
| MS/790/31 | Letter from William Clavering-Cowper, 2nd Earl Cowper, London, to [Martin Folkes] | 22 February 1741 |
| MS/790/22 | Letter from Gasparo Cerati, Paris, to Martin Folkes, Queen’s Square, London | 23 February 1736 |
| MS/790/105 | Letter from John Montagu [2nd Duke of Montagu], to Martin Folkes | c.1740 |
| MS/790 | Correspondence of Martin Folkes | 1704-1749 |
| MS/790/60 | Letter from Marie Thérèse Rodet Geoffrin, to Martin Folkes, President of the Royal Society. London | 28 April [1742?] |
| MS/790/94 | Letter from Thomas Miles, Worcester, to Martin Folkes, The Royal Society's House in Crane Court | 1 February 1742 |
| MS/790/88 | Letter from Pierre Louis Moreau de Maupertuis, Saint-Malo, France, to [Martin Folkes] | 26 July 1738 |
| MS/790/57 | Letter from Marie Thérèse Rodet Geoffrin, to [Martin Folkes] | 15 September 1742 |
| MS/790/1 | Letter from Mohammed Ben Ali Abgali, to Martin Folkes | 1718 [?] |
| MS/790/129 | Letter from F. L. [Captain Frederic Lewis] Norden, Chelsea, to [Martin Folkes] | 27 April 1742 |
| MS/790/109 | Letter from John Montagu [2nd Duke of Montagu], to Martin Folkes | c.1740 |
| MS/790/154 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 13 June 1740 |
| MS/790/110 | Letter from John Montagu [2nd Duke of Montagu], to [Martin Folkes] | c.1740 |
| MS/790/97 | Letter from John Montagu [2nd Duke of Montagu], London, to Martin Folkes | 3 September 1740 |
| MS/790/79 | Letter from Charles Labelye, Crown Court, Westminster, to Martin Folkes | 22 March 1742 |
| MS/790/99 | Letter from John Montagu [2nd Duke of Montagu], to Martin Folkes | 17 February 1741 |
| MS/790/100 | Letter from John Montagu [2nd Duke of Montagu], Boughton, [Northamptonshire], to [Martin Folkes] | 9 September 1742 |
| MS/790/103 | Letter from John Montagu [2nd Duke of Montagu], to Martin Folkes | [1743] |
| MS/790/176 | Letter from Elizabeth Vernon, Great Thurlow, near Horseheath in Cambridgeshire, to Martin Folkes, Queen Square, Ormond Street, London | 1 February 1743 |
| MS/790/162 | Letter from D. Diego Revillas [ Didacus de Revillas], Rome, [Italy], to Martin Folkes | 19 March 1738 |
| MS/790/93 | Copy letter from Christopher Middleton, London, to [Martin Folkes?] | 10 November 1742 |
| MS/790/180 | Letter from Jean Welin, Rome, [Italy], to Martin Folkes, Queen's Square, Bloomsbury, London via Paris | 16 November 1741 |
| MS/790/125 | Letter from F. [Captain Frederic Lewis] Norden, Portsmouth, to Martin Folkes, Queens Square, London | 11 October 1740 |
| MS/790/107 | Letter from John Montagu [2nd Duke of Montagu], Ditton, to Martin Folkes | c.1740 |
| MS/790/116 | Letter from [Jean Baptiste, Baron] Secondat de Montesquieu, Paris France, to Martin Folkes, London | 17 August 1739 |
| MS/790/132 | Letter from Warner Oben, Tregoney [Tregony], Cornwall, to Martin Folkes, The Royal Society, London | 7 January 1743 |
| MS/790/119 | Letter from [Jean Baptiste, Baron] Secondat de Montesquieu, Bordeaux, France, to [Martin Folkes] | c.1740 |
| MS/790/164 | Letter from John Russell, 4th Duke of Bedford, Woburn Abbey, to [Martin Folkes] | 24 December 1739 |
| MS/790/160 | Letter from Giovanni Poleni, to Martin Folkes | 4 June 1733 |
| MS/790/121 | Letter from Cromwell Mortimer, to Martin Folkes | 23 January 1744 |
| MS/790/122 | Letter from C. Newton, Compiegne [Oise, France], to [Martin Folkes] | 24 July 1739 |
| MS/790/74 | Letter from H Holstein [?], to Martin Folkes | 3 March 1744 |
| MS/790/127 | Letter from F. L. [Captain Frederic Lewis] Norden, Portsmouth, to [Martin Folkes] | 12 October 1740 |
| MS/790/172 | Letter from Abraham Trembley, La Haye, [France], to Martin Folkes, London | 14 January 1744 |
| MS/790/133 | Letter from Warner Oben, Tregoney [Tregony], Cornwall, to [Martin Folkes] | 9 January 1743 |
| MS/790/134 | Letter from [George Parker, 2nd Earl] Macclesfield, Shirburn [Shirburn Castle, Oxfordshire] to [Martin Folkes] | 8 August 1743 |
| MS/790/128 | Letter from F. L. [Captain Frederic Lewis] Norden, London, to Martin Folkes, London | 11 September 1741 |
| MS/790/155 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 4 February 1741 |
| MS/790/158 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 30 January 1744 |
| MS/790/135 | Letter from [George Parker, 2nd Earl] Macclesfield, St James's Square, [London], to [Martin Folkes] | 10 April [1744?] |
| MS/790/171 | Letter from Charles Stanhope, to Martin Folkes | c.1740 |
| MS/790/156 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 3 November 1742 |
| MS/790/166 | Letter from [Frederick Christian?] Danneskiold Samsoe, Copenhagen, [Denmark], to [Martin Folkes] | 14 March 1744 |
| MS/790/177 | Letter from John Ward, Gresham College, to Martin Folkes | 13 October 1740 |
| MS/790/140 | Letter from Edmund Prideaux, Lyons, [France], to Martin Folkes, Queens Square near Ormond Street, London, England | 24 July 1739 |
| MS/790/143 | Letter from Edmund Prideaux, Florence, [Italy], to [Martin Folkes] | 18 October 1739 |
| MS/790/149 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 20 April 1740 |
| MS/790/146 | Letter from Edmund Prideaux, Paris, [France], to Martin Folkes, Queensquare, London, England | 16 January 1740 |
| MS/790/148 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 14 March 1740 |
| MS/790/150 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 5 May 1740 |
| MS/790/161 | Letter from Giovanni Poleni, to Martin Folkes | 1 June 1737 |
| MS/790/159 | Letter from Giovanni Poleni, to Martin Folkes | 31 May 1733 |
| MS/790/175 | Letter from Paul Vaillant, to Martin Folkes | 27 April 1744 |
| MS/790/165 | Letter from [Frederick Christian?] Danneskiold Samsoe, Copenhagen, [Denmark], to [Martin Folkes] | 10 January 1744 |
| MS/790/163 | Letter from Jonathan Richardson, to [Martin Folkes] | 17 March 1737 |
| MS/790/147 | Letter from Edmund Prideaux, Rome, [Italy], to Martin Folkes, Queensquare, Ormond Street, London | 20 February 1740 |
| MS/790/144 | Letter from Edmund Prideaux, Rome, [Italy], to Martin Folkes, Queens Square near Ormond Road, London, England | 14 November 1739 |
| MS/790/29 | Letter from Thomas Corbett, Admiralty Office, to Martin Folkes, President of the Royal Society | 29 July 1742 |
| MS/790/173 | Letter from Abraham Trembley, La Haye, [France], to Martin Folkes, London | 31 March 1744 |
| MS/790/174 | Letter from Abraham Trembley, to Martin Folkes, London | [1744] |
| MS/790/108 | Letter from John Montagu [2nd Duke of Montagu], to [Martin Folkes] | c.1740 |
| MS/420 | Catalogue of the Norfolk Library of the Royal Society | c.1744 |
| MS/790/169 | Letter from James Short, Surrey Street, [London], to Martin Folkes, Queens Square | 1 February 1744 |
| MS/790/168 | Letter from George Shelvocke, General Post Office, to [Martin Folkes] | 20 January 1743 |
| MS/790/62 | Letter from Marie Thérèse Rodet Geoffrin, to Martin Folkes, Vice-President of the Royal Society. London | [1742] |
| MS/790/7 | Letter from Edward Bayly, Havant, to the Reverend John Predden, Chichester | 21 August 1740 |
| MS/790/104 | Letter from John Montagu [2nd Duke of Montagu], to Martin Folkes | c.1740 |
| MS/790/178 | Letter from Charles Hope Weir, Edinburgh, [Scotland], to [Martin Folkes] | 15 May 1744 |
| MS/790/16 | Letter from François de Brémond, Paris, to [Martin Folkes] | 29 October 1741 |
| MS/790/20 | Letter from John Catlin, London, to [Martin Folkes] | 29 December 1743 |
| MS/790/25 | Letter from Antonio Cocchi, Florence, to [Martin Folkes] | 24 December 1735 |
| MS/790/44 | Letter from Henry Finch, Albury [near Guildford in Surrey] to [Martin Folkes?] | 18 October 1742 |
| MS/790/69 | Letter from Henry Herbert 9th Earl of Pembroke FRS, White Hall [Whitehall], to Martin Folkes | 31 March [1749] |
| MS/790/83 | Letter from William Mace, to Martin Folkes, Queen's Sqaure, near Holborn | 24 March c 1740s |
| MS/790/95 | Letter from Andrew Mitchell, Whitehall, to Martin Folkes | 15 June 1742 |
| MS/790/111 | Letter from Sandwich [John Montagu 4th Earl of Sandwich], Sturtlow near Huntingdon, to [Martin Folkes] | 2 August 1741 |
| MS/790/126 | Letter from F. L. [Captain Frederic Lewis] Norden, Portsmouth, to [Martin Folkes] | 16 October 1740 |
| MS/790/137 | Letter from [George Parker, 2nd Earl] Macclesfield, St James's Square, [London], to [Martin Folkes] | [c.1744] |
| MS/790/139 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 7 June 1739 |
| MS/790/130 | Letter from George North, Watton near Hertford, to Martin Folkes, Queen's Square, London | 15 December 1739 |
| MS/790/142 | Letter from Edmund Prideaux, Genoa, [Italy], to Martin Folkes, Queens Square near Ormond Street, London | 21 September 1739 |
| MS/790/141 | Letter from Edmund Prideaux, Aix, [France], to [Martin Folkes] | 29 August 1739 |
| MS/790/14 | Letter from John Boyle, 5th Earl of Cork and 5th Earl of Orrery, Caledon, to Martin Folkes | 6 April 1748 |
| MS/790/53 | Letter from William Folkes, Newton, to Martin Folkes | 15 August 1742 |
| MS/790/152 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 3 June 1740 |
| MS/790/153 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 9 June 1740 |
| MS/790/179 | Letter from Jean Welin, Paris, [France], to [Martin Folkes] | 17 June 1741 |
| MS/790/182 | Letter from Taylor White, Lincoln’s Inn Fields, to Martin Folkes | 3 December 1741 |
| MS/790/115 | Letter from [Baron de La Brède, Charles de Secondat] Montesquieu, Paris, France, to Martin Folkes, Queen's Square, London | 27 September 1742 |
| MS/790/136 | Letter from [George Parker, 2nd Earl] Macclesfield, [St James's Square, London], to [Martin Folkes] | [11 April 1744?] |
| MS/790/112 | Letter from Sandwich [John Montagu 4th Earl of Sandwich], Sturtlow, to [Martin Folkes] | 22 September 1741 |
| MS/790/98 | Letter from John Montagu [2nd Duke of Montagu], Ditton, to Martin Folkes | 5 February 1741 |
| MS/790/157 | Letter from Edmund Prideaux, Paris, [France], to [Martin Folkes] | 7 January 1744 |
| MS/790/58 | Letter from Marie Thérèse Rodet Geoffrin, Paris, to Martin Folkes, President of the Royal Society, London | 28 September 1742 |
| MS/790/6 | Letter from John Bacon, Codenham, near Ipswich, to Martin Folkes, Great Queen's Square | 7 May [1739 or 1744?] |
| MS/790/18 | Letter from James Burrow to [Martin Folkes] | n.d. [1744] |
| MS/790/96 | Letter from John Montagu [2nd Duke of Montagu], London, to Martin Folkes | 20 November 1733 |
| MS/790/63 | Letter from Girolamo Ascanio Giustiniani, Venice, to Martin Folkes | 7 June 1737 |
| MS/790/11 | Letter from William Bentinck, 2nd Duke of Portland, Whitehall, to Martin Folkes | 26 April 1743 |
| MS/790/39 | Letter from Johann Gabriel Doppelmayr, Nuremberg, to [Martin Folkes] | 8 September 1741 |
| MS/790/37 | Letter from Johann Gabriel Doppelmayr, Nuremberg, to Martin Folkes, Vice-President of the Royal Society, London | 20 November 1739 |
| MS/790/33 | Letter from Jean-Jacques d'Ortous de Mairan, Secretary, Academie des Sciences, Paris, to [Martin Folkes] | 5 May 1742 |
| MS/790/89 | Letter from Pierre Louis Moreau de Maupertuis, Paris, France, to Martin Folkes, Queen's Square, London | 28 July 1739 |
| MS/790/28 | Letter from Antonio Conti, Venice, to [Martin Folkes] | 9 July 1733 |
| MS/790/35 | Letter from Jean-Jacques d'Ortous de Mairan, Paris, to Martin Folkes | 25 March 1744 |
| MS/790/106 | Letter from John Montagu [2nd Duke of Montagu], Lincum [Lyncombe, Bath] to Martin Folkes | c.1740 |
| MS/790/32 | Letter from Peter Davall, Temple, to Martin Folkes | no date [1740s?] |
| MS/790/117 | Letter from Secondat [Jean Baptiste, Baron Secondat de Montesquieu], Bordeaux, France, to Martin Folkes, London | 10 March 1744 |
| MS/790/2 | Letter from Mohammed Ben Ali Abgali to Martin Folkes | 1718 [?] |
| MS/790/21 | Letter from Anders Celsius, Torne, to Martin Folkes, Vice President of the Royal Society, Crane Court, Fleet Street | 3 December 1736 |
| MS/790/15 | Letter from Philip Skelton, Monaghan, to John Boyle, 5th Earl of Cork and 5th Earl of Orrery | 29 March 1748 |
| MS/790/77 | Letter from Hieronymus Ascanius Justinianus [Girolamo Ascanio Giustiniani], Venice, to [Martin Folkes], | 9 April 1737 |
| MS/790/64 | Letter from Philips Glover FRS, Wispinton [Wispington] near Horncastle, Lincolnshire, to Martin Folkes, Queens Square, Bloomsbury, London | 27 April 1737 |
| MS/790/70 | Letter from [Lucius Henry] Hibbins, Norton, to Martin Folkes | c.1723 |
| MS/790/102 | Letter from M. [John Montagu, 2nd Duke of Montagu], Lincomb [Lyncombe, Bath], to Martin Folkes, Queen's Square, near Ormond Street, London | 18 August 1743 |
| MS/790/131 | Letter from George North, Watton near Hertford, to [Martin Folkes] | 1 October 1740 |
| MS/790/113 | Letter from Sandwich [John Montagu 4th Earl of Sandwich], Sturtlow, to [Martin Folkes] | 11 October 1741 |
| MS/790/26 | Letter from Antonio Cocchi, Florence, to [Martin Folkes] | 31 March 1736 |
| MS/790/145 | Letter from Edmund Prideaux, Rome, [Italy], to Martin Folkes, Queens Square near Ormond Street, London, England | 17 December 1739 |
| MS/790/181 | Letter from James West, Lincoln's Inn [London, England], to Martin Folkes, Queens Square, Ormond Street, [London] | 6 February 1741 |
| MS/790/183 | Letter from Browne Willis, Whaddon Hall near Fenny Stratford, to Martin Folkes, Queen's Square, Ormond Street, London | 12 April 1742 |
| MS/790/184 | Letter from Browne Willis, Whaddon near Fenny Stratford, Buckinghamshire, to Martin Folkes, Queen's Square, Ormond Street, London | 17 April 1742 |
| MS/790/185 | Letter from Browne Willis, Whaddon [near Fenny Stratford, Buckinghamshire], to Martin Folkes, Queen's Square, Ormond Street, London | 21 April 1742 |
| MS/790/186 | Letter from Browne Willis, Whaddon Hall near Fenny Stratford, [Buckinghamshire], to Martin Folkes, Queen's Square, Ormond Street, London | 27 September 1742 |
| MS/958 | 'Memoir of my singular history' by Benjamin Wilson FRS | 1781 |
| MS/790/76 | Letter from James Jurin, Austin Fryars, to Martin Folkes | 9 April 1743 |
| MS/790/86 | Letter from Benjamin Martin, Chichester, to Martin Folkes | 8 December 1741 |
| MS/250 | Papers of Martin Folkes | 1710-1754 |
| IM/001482 | Folkes, Martin | c.1750 |
| MS/790/47 | Draft letter from Martin Folkes to [Jonathan Richardson the younger] | [April-May 1737] |
| IM/001480 | Folkes, Martin | 1802 |
| IM/001483 | Folkes, Martin | nd |
| MS/790/87 | Letter from Benjamin Martin, Wicomb, to Martin Folkes | 22 December 1741 |
| L&P/1/479 | Paper, 'Journal of observations made in Peru; and account by Martin Folkes' by Antonio de Ulloa | 1746 |