| RefNo | Title | Date |
| EC/1772/20 | Blagden, Sir Charles: certificate of election to the Royal Society | 25 June 1772 |
| IM/005299 | Blagden, Sir Charles | 1994 |
| MM/2/11C | Card from Charles Blagden, Kings Road, to Russell | 23 April 1784 |
| DM/4/18 | Copies of letters from Comte de Cassini, Paris, to Charles Blagden | 29 May 1787, 27 July 1787 |
| DM/4/22 | Copy of a letter Charles Blagden to Comte de Cassini | 20 April 1787 |
| DM/4/19 | Copy of letter from Charles Blagden to Comte de Cassini, Paris | 29 June 1787 |
| CB/1/2/1 | Letter from Charles Blagden, Dicksons Close, Edinburgh to Mrs Elizabeth Nelmes | 1 November 1765 |
| MM/16/101 | Letter from J B Biot to C Blagden | 29 April 1816 |
| IM/005298 | Blagden, Sir Charles | 1994 |
| IM/000400 | Blagden, Sir Charles | nd |
| MS/818 | Letter from Sir Joseph Banks to Sir Charles Blagden | 28 October 1818 |
| MS/62 | The Marine Atlas by Thomas South. A New Invention for the Preservation of Ships and Security of Mariners. Humbly offered to the Public in its unfinished state, as an Excitement to Industry and Ingenuity | 1787 |
| MS/819 | Letter from Sir Charles Blagden to Sir Joseph Banks | 31 August 1790 |
| MS/821/3/52 | Fragmentary note on Cavallo's Treatise on air, by [Charles] Blagden | 1781 |
| DM/4/116 | Copy of letter from Sir Joseph Banks | 18 March 1796 |
| L&P/9/76 | Paper, 'Experiments on the cooling of water below its freezing point' by Charles Blagden | 1788 |
| MS/821/3/35 | Notes from various publications, by [Charles Blagden] | c.1780 |
| L&P/11/7 | Letter, 'Official report on the lightning conductors at Purfleet' from Henry Cavendish and Charles Blagden to Joseph Banks | 23 June 1796 |
| L&P/8/163 | Paper, 'Of an erratum in his paper in the Philosophical Transactions' from Edward Waring to Charles Blagden | 1785 |
| L&P/8/156 | Letter, 'On further magnetical experiments suggested by Dr Blagden' from Tiberius Cavallo to Charles Blagden | 9 January 1786 |
| MS/821/3/34 | Notes on the Journal des Physique, by [Charles Blagden] | 1784 |
| L&P/8/59 | Letter, 'On meteors' from Charles Blagden to Joseph Banks | 1783 |
| L&P/6/86 | Paper, 'Experiments and observations in a heated room' by Charles Blagden | 1775 |
| L&P/6/46 | Letter, 'The history of reindeer' from Daines Barrington to Charles Blagden | 30 December 1773 |
| L&P/7/196 | Paper, 'Of the heat of the water in the Gulf Stream' by Charles Blagden | 1781 |
| L&P/6/132 | Paper, 'Further experiments in a heated room' by Charles Blagden | 1775 |
| L&P/7/183 | Letter, 'Flagstaff struck by lightning' from Charles Blagden to Joseph Banks | 22 November 1780 |
| L&P/9/74/1 | Letter, 'Account of electrical apparatus' from John Lyon to Charles Blagden | 6 December 1787 |
| L&P/9/52 | Letter, 'Narrative of a fall into an abandoned coal-pit near Glasgow' from George Spearing to Charles Blagden | 28 November 1786 |
| L&P/7/239/1 | Report, 'Of the failure of eight pointed conductors to prevent the poor-house at Heckingham, Norfolk' by Charles Blagden and Edward Nairne | 7 February 1782 |
| L&P/12/134/1 | Letter, 'Description of an instrument of greater extent than a sextant' by Anthony Dunlop to Charles Blagden | 30 March 1806 |
| L&P/11/16 | Letter, 'On the intensity of cold' from Richard Walker to Charles Blagden | 1796 |
| L&P/9/169 | Paper, 'Report on the best method of proportioning the excise upon spirituous liquors' by Charles Blagden | 1790 |
| L&P/9/85 | Paper, 'Experiments on the effect of various substances in lowering the point of congelation in water' by Charles Blagden | 1788 |
| L&P/10/23 | Paper, 'Supplementary report on the best method of proportioning the excise upon spirituous liquors' by Charles Blagden | 1792 |
| L&P/10/24 | Paper, 'Appendix to the report given by Charles Blagden' by George Gilpin | 14 June 1792 |
| L&P/10/15 | Letter, 'Remarkable failure of haddocks on the coasts of Northumberland, Durham and Yorkshire' from Reverend Cooper Abbs to Charles Blagden | 9 May 1792 |
| L&P/8/30 | Paper, 'History of the congelation of quicksilver' by Charles Blagden | 1783 |
| L&P/11/9 | Note, 'To the effect that Mr Tennant has destroyed his paper in the diamond' from Bulmer to Charles Blagden | 1796 |
| DM/4/17 | Copy of letter from Charles Blagden to Comte de Cassini | 18 May 1787 |
| L&P/10/58 | Paper, 'Specimen of a meteorological chart' by G Smith, sent to Sir Charles Blagden | 1 January 1793 |
| MS/821 | Additional papers of Charles Blagden | 18th Century-19th Century |
| PT/7/14 | Paper, 'An appendix to Mr Ware's paper on vision' by Sir C [Charles] Blagden | [1813] |
| MS/821/3/33 | Notes from various publications, by [Charles Blagden] | 1782 |
| L&P/8/61/1 | Letter, 'On the remarkable appearance of the polar regions of Mars and inclination of its axis' from William Herschel to Charles Blagden | 1 December 1783 |
| L&P/8/172/1 | Letter, 'Of cliff-sinkings at Folkestone' from Edward King and J Lyon to Charles Blagden | 24 November 1785 |
| MS/821/3/56 | Fragmentary chemical notes, by [Charles Blagden] | c.1781 |
| L&P/9/60 | Paper, 'Some observations on ancient inks, with the proposal of a new method of recovering the legibility of decayed writings' by Charles Blagden | 1787 |
| L&P/8/85 | Letter, 'On litmus, red cabbage and other test liquors' from James Watt to Charles Blagden | 29 May 1784 |
| L&P/7/239 | Paper, 'Of the failure of eight pointed conductors to prevent the poor-house at Heckingham, Norfolk' by Charles Blagden and Edward Nairne | 1782 |
| L&P/9/9 | Letter, 'Remarks on the new comet' from William Herschel to Charles Blagden | 15 November 1786 |
| L&P/9/19 | Letter, 'Appendix to the description of a new electrometer ' from Abraham Bennet to Charles Blagden | 18 December 1786 |
| L&P/10/48 | Letter, 'Account of the tides at Naples' from Charles Blagden to Joseph Banks | 30 March 1793 |
| MS/821/3/57 | Fragmentary note on arnica, by [Charles Blagden] | c.1781 |
| HS/5/75 | Letter, from Charles Blagden to Sir John Herschel | 3 February 1819 |
| MS/821/3/50 | Notes on miscellaneous subjects, by [Charles Blagden] | c.1785 |
| L&P/9/8/1 | Letter, 'Account of a new comet' from Caroline Herschel to Charles Blagden | 2 August 1786 |
| IM/000401 | Blagden, Sir Charles | 1816 |
| MS/821/2/2 | Diary of Sir Charles Blagden | 22 July-11 August 1792 |
| MS/821/2/1 | Diary of Sir Charles Blagden | 21 June-7 July 1792 |
| MS/821/2/3 | Diary of Sir Charles Blagden | 25 October-24 November 1793 |
| MS/821/2/5 | Diary of Sir Charles Blagden | 5-18 December 1793 |
| MS/821/3/19 | Notes on warthogs, by [Charles Blagden] | no date [1780s-1790s] |
| MS/821/3/54 | Fragmentary note on Rozier's Journal, by [Charles Blagden] | 1781 |
| MS/821/2 | Diary of Sir Charles Blagden | 21 June 1792-16 May 1794 |
| MS/821/2/9 | Diary of Sir Charles Blagden | 23 March-16 May 1794 |
| MS/821/3/55 | Fragmentary note on the Journal des sçavans, by [Charles Blagden] | 1781 |
| MS/821/3/4 | Notes on Edward Ives' 'A voyage from England to India...', by Charles Blagden | c.1780s |
| MS/821/3/3 | 'Remarks on Dr. Mayer's lectures', by Charles Blagden | 20 July-20 September 1782 |
| MS/821/3/5 | Notes on Rozier's Journal, by Charles Blagden | c.1778-1779 |
| MS/821/3/8 | Extracts from travel publications on Russia, by Charles Blagden | c.1793 |
| MS/821/3/18 | Notes on elephants, by [Charles Blagden] | no date [1780s-1790s] |
| MS/821/3/7 | Extracts from Transactions of the Royal Swedish Academy of Sciences, Stockholm, by Charles Blagden | c.1781 |
| MS/821/3/9 | Medical case note collected by Charles Blagden | 1781 |
| MS/821/3/6 | Extracts on chemistry from Rozier's Journal, by Charles Blagden | c.1781 |
| MS/821/3/10 | Medical case note collected by Charles Blagden | c.1781 |
| MS/821/3/17 | Notes on a fish, by [Charles Blagden] | no date [1780s-1790s] |
| MS/821/3/28 | Notes on Lepechin's Travels, by [Charles Blagden] | c.1775-1780 |
| MS/821/3/20 | Note on dysentery, by [Charles Blagden] | c.1781 |
| MS/821/3/16 | Draft letter from 'C.B.' [Charles Blagden], to Count [Siegmund von] Haslang | 28 December 1793 |
| MS/821/3/27 | Note on Crell's Annals, by [Charles Blagden] | c.1780 |
| MS/821/3/21 | Notes on Rozier's Journal, by [Charles Blagden] | 1781 |
| MS/821/3/24 | Extracts from Transactions of the Royal Swedish Academy of Sciences, Stockholm, by Charles Blagden | c.1779 |
| MS/821/3/26 | Notes on the Journal of the Academy of Sciences of Gottingen, by [Charles Blagden] | 1780 |
| MS/821/3/25 | Notes on Buffon's Histoire Naturelle, by [Charles Blagden] | 1778 |
| MS/821/3/38 | List of patients treated with arnica, by [Charles Blagden] | c.1780 |
| MS/821/3/32 | Note on Engel's Mémoire sur la navigation...', by [Charles Blagden] | c.1779 |
| MS/821/3/29 | Notes on Lettere Odeporiche, by [Charles Blagden] | c.1780 |
| MS/821/3/30 | Notes on Lettere Odeporiche, by [Charles Blagden] | c.1780 |
| MS/821/3/31 | Notes on Chaptal's Mémoires de chimie, by [Charles Blagden] | c.1780 |
| MS/821/3/40 | Note on the Transactions of the Royal Swedish Academy of Sciences, Stockholm, by [Charles Blagden] | 1780 |
| MS/821/3/37 | Note on maps, by [Charles Blagden] | c.1775 |
| MS/821/3/48 | Note on a barometer, by Charles Blagden | c.1780s |
| MS/821/3/53 | Fragmentary note on Bergman's Colica, by [Charles] Blagden | c.1781 |
| MS/821/3/49 | Notes on Chinese words, by Charles Blagden | c.1780s |
| MS/821/3/43 | Notes on Saidschütz bitter water, by [Charles Blagden] | c.1780 [?] |
| MS/821/3/41 | Note on landscape features of the south west of England, by [Charles Blagden] | c.1780 [?] |
| MS/821/3/42 | Notes on treatments for diseases, by [Charles Blagden] | c.1780 [?] |
| MS/821/3/45 | Note on ink, by [Charles Blagden] | December 1781 |
| MS/821/3/47 | Notes on chemistry, by Charles Blagden | c.1780s |
| MS/821/2/4 | Diary of Sir Charles Blagden | 25 November-4 December 1793 |
| MS/821/2/6 | Diary of Sir Charles Blagden | 18 December 1793-1 January 1794 |
| MS/821/2/7 | Diary of Sir Charles Blagden | 2 January-8 February 1794 |
| MS/821/2/8 | Diary of Sir Charles Blagden | 9 February-22 March 1794 |
| MOB/044 | Compound microscope | c.1800 |
| CB | Papers of Sir Charles Blagden | 1771-1820 |
| MS/821/3/2 | Draft paper, 'Further experiments and observations in a heated room', by Charles Blagden | 1775 |
| MS/821/3/39 | Note on observations of patients, by [Charles Blagden] | c.1780 |
| MS/821/3/22 | Notes on Rozier's Journal, by [Charles Blagden] | 1781 |
| MS/821/3/23 | Notes on Rozier's Journal, by [Charles Blagden] | 1778 |
| MS/821/3/36 | Note on Rozier's Journal, by [Charles Blagden] | 1778 |
| MS/821/3/44 | Notes on miscellaneous subjects, by [Charles Blagden] | c.1785 |
| MS/821/3/46 | Note on a case of dysentery, by an unknown author, collected by Charles Blagden | c.1780s |
| MM/1/33 | Letter from Sir Joseph Banks, Soho Square | 29 March 1784 |