| RefNo | Title | Date |
| HWT/20/45 | Correspondence and papers regarding RSEP Ford Foundation grant, Wates Foundation funding, invitation to Aigrain and draft report on progress of European Science Exchange Programme | February - March 1969 |
| HWT/20/13 | Correspondence with International Association for the Exchange of Students for Technical Experience and Ford Foundation | December 1966 |
| HWT/20/33 | Papers regarding discussion at Royal Society on UK/Italian relationships | 2 February 1968 |
| HWT/28/1/4 | Letter from R D Keynes to Thompson, letters from Blackett to Presidents of Brazilian Academy and Science Council, Royal Society Council paper | February 1968 |
| EC/1933/01 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea: certificate of election to the Royal Society | |
| IM/GA/WG/9449 | Presidents 1940-1970 | nd |
| HWT/36/1/2 | General correspondence and papers | January 1966 |
| HWT/20/17 | Correspondence with Accademia Nazionale dei Lincei, Ford Foundation and Robert Maxwell with papers regarding RSEP Fellowships, Thompson's visit to Israel and meeting between Royal Society and Science Research Council representatives | April 1967 |
| HWT/20/46 | Correspondence and papers regarding Ford Foundation grant, Wates Foundation funding, visit to UK of Italian scientific delegation, income tax under RSEP | April - June 1969 |
| HWT/40/18 | Correspondence and papers regarding ICSU Committee on Science and Technology in Developing Countries (COSTED) | April - May 1966 |
| HWT/20/8 | Correspondence and papers regarding Ford Foundation application, Wates Foundation funding | June - July 1966 |
| HWT/20/5 | Correspondence and papers regarding proposals for scientific interchange in Western Europe | April 1966 |
| HWT/10/2 | Correspondence and papers regarding Officers' meeting with Frederick W Mulley, Minister of State for Foreign and Commonwealth Affairs | 25 April 1969 |
| HWT/33/1 | H W Thompson's personal correspondence as Foreign Secretary | 1965 |
| IM/000395 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | 1956 |
| IM/000445 | Borman, Frank | c 1969 |
| IM/000396 | Rome Conference 1931 | 1931 |
| IM/000397 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | c 1967 |
| IM/000392 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | nd |
| MS/850/2/1 | Letter from Patrick Maynard Stuart Blackett, Ministry of Supply, Savoy Hill House, London to Sir Alfred Charles Glyn Egerton | 29 November 1940 |
| RR/54/12 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'Experiments at very low temperatures obtained by the magnetic method I—The production of the low temperatures' by Nicholas Kurti and F. Simon | May 1935 |
| RR/52/55 | Referee's report by Charles Thomson Rees Wilson, on a paper 'On the technique of the counter controlled cloud chamber' by Patrick Maynard Stuart Blackett | May 1934 |
| RR/61/48 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'Studies of region E of the Ionosphere' by J E Best, F T Farmer and John Ashworth Ratcliffe | October 1937 |
| RR/51/51 | Referee's report by Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, on a paper 'Application of the Wilson chamber to the study of spark discharge' by U Nakaya and F Yamasaki | [October 1934] |
| RR/57/106 | Referee's report by Charles Drummond Ellis, on a paper 'The measurement of the energy of cosmic rays I—The electro-magnet and cloud chamber' by Patrick Maynard Stuart Blackett | [February 1936] |
| RR/55/44 | Referee's report by Charles Drummond Ellis, on a paper 'The measurement of the energy of cosmic rays - II—The curvature measurements and the energy spectrum' by Patrick Maynard Stuart Blackett and R B Brode | January 1936 |
| RR/61/54 | Referee's report by James Chadwick, on a paper 'The nature of the penetrating coponent of cosmic rays' by Patrick Maynard Stuart Blackett | January 1938 |
| RR/55/91 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'Experiments with high velocity positive ions VI—The disintegration of carbon, nitrogen, and oxygen by deuterons' by John Douglas Cockcroft and Wilfrid Bennett Lewis | January 1936 |
| RR/66/46 | Referee's report by Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, on a paper 'Upper air investigations in North-West Greenland' by Hugh Carmichael and E G Dymond | [1939] |
| RR/61/8 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'The reflexion coefficients of ionospheric regions' by Edward Victor Appleton and J H Piddington | July 1937 |
| RR/61/53 | Referee's report by Ernest Rutherford, on a paper 'The energy loss of cosmic ray particles in metal plates' by Patrick Maynard Stuart Blackett and J Gordon Wilson | April 1937 |
| RR/61/78 | Referee's report by Patrick Marnard Stuart Blackett, on a paper 'Measurements of range and angle of projection for the protons produced in the photo-disintegration of deuterium' by James Chadwick, Norman Feather and E Bretscher | September 1937 |
| RR/65/9 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'On the theory of coincidence experiments on cosmic rays' by N Arley | July 1938 |
| RR/66/45 | Referee's report by Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, on a paper 'High altitude cosmic radiation measurements near the north geomagnetic pole' by Hugh Carmichael and E G Dymond | [1939] |
| RR/70/57 | Letter from Patrick Maynard Stewart Blackett, on a paper 'The ejection of protons from nitrogen on bombardment with a-particles of short range' by F C Champion and R R Roy | 21 April 1947 |
| RR/66/334 | Referee's report by Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, on a paper 'Some observations on cosmic rays using a large randomly operated cloud chamber' by Evan James Williams | [May 1939] |
| RR/68/248 | Letter from Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, to Alfred Charles Glyn Egerton, regarding a paper 'The production of cosmic-ray bursts by mesotrons' by C B O Mohr and Godfrey Harry Stafford | 20 September 1943 |
| RR/67/222 | Letter and memorandum from J D Griffith Davies, Assistant Secretary of the Royal Society on a paper 'On the nucleus of uranium' by H Halban and L Kowarski to Patrick Maynard Stuart Blackett | 5 December 1940 |
| RR/68/247 | Letter from Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, to John David Griffith Davies, regarding a paper 'The production of cosmic-ray bursts by mesotrons' by C B O Mohr and Godfrey Harry Stafford | 1 October 1942 |
| RR/70/56 | Referee's report by Patrick Maynard Stewart Blackett, on a paper 'The ejection of protons from nitrogen on bombardment with a-particles of short range' by F C Champion and R R Roy | 1947 |
| RR/67/33 | Memorandum by J D Griffith Davies, Assistant Secretary of the Royal Society, on a paper 'Radio echoes and cosmic ray showers' by Patrick Maynard Stuart Blackett and Alfred Charles Bernard Lovell to William Lawrence Bragg | 31 October 1940 |
| RR/39/27 | Referee's report by Sydney Chapman, on two papers 'A flow method for comparing the specific heats of gases part I. The experimental method' and 'A flow method for comparing the specific heats of gases. part II. The theory of the method' by Patrick Maynard Stuart Blackett, P S H Henry and Eric Keightley Rideal | [November 1929] |
| NLB/66/189 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society, to [Patrick Maynard Stuart] Blackett, Kings' College, Cambridge | 12 March 1924 |
| NLB/64/871 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Patrick Maynard Stuart] Blackett Esq. King's College, Cambridge | 5 July 1923 |
| NLB/66/141 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to [Patrick Maynard Stuart] Blackett, Esq., King's College, Cambridge | 28 February 1924 |
| NLB/66/301 | Copy letter from [William Bate Hardy, Secretary] of the Royal Society; to [Patrick Maynard Stuart] Blackett Esq., King's College, Cambridge | 4 April 1924 |
| NLB/66/299 | Copy letter from [William Bate Hardy, Secretary] of the Royal Society; to Sir Ernest Rutherford, FRS | 4 April 1924 |
| NLB/68/270 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Karl] K. Darrow Esq.; Bell Telephone Laboratories, 463 West Street, New York | 10 June 1925 |
| NLB/68/743 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Secretary of the Clarendon Press; Oxford | 28 October 1925 |
| NLB/68/955 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [George William Clarkson] Kaye, OBE; National Physical Laboratory, Teddington | 8 December 1925 |
| IM/GA/WS/836 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | nd |
| IM/000393 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | nd |
| HWT/26/1 | Correspondence and papers regarding arrangements for conference of Scientists of the Royal Society and Indian National Science Academy held at New Delhi, 8 March 1971 | November 1970 - April 1971 |
| HWT/25/1 | Report on discussions with representatives of Academia Sinica on the occasion of a visit to Peking by P M S Blackett and A R Clapham | 11 September - 2 October 1964 |
| P/0009 | Portrait of Blackett, Patrick Maynard Stuart; Baron Blackett of Chelsea | 1970 |
| RR/64/55 | Referee's report by Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, on a paper 'On the analysis of cosmic rays' by Walter Heinrich Heitler | [April 1937] |
| RR/53/45 | Referee's report by Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, on a paper 'On the polarization of electrons by scattering.—II' by E G Dymond | [March 1934] |
| RR/67/26 | Letter from Patrick Maynard Stuart Blackett, on a paper 'General classical theory of spinning particles in a Maxwell field' by Homi Jehangir Bhabha and H C Corben to Winchcraft | 9 February 1941 |
| RR/68/250 | Referee's report by Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, on a paper 'Applications of photographic method to problems in nuclear physics. I (a) The determination of the energy of homogeneous groups of a-particles and protons (b) The determination of the energy of fast neutrons' by Cecil Frank Powell | 27 June 1942 |
| NLB/69/308 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Karl Kelchner] Darrow Esq., New York, [USA] | 27 February 1926 |
| NLB/66/140 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Ernest Rutherford, FRS | 28 February 1924 |
| IM/GA/WRS/6442 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | nd |
| IM/000391 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | July 1968 |
| IM/005269 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea and Lees, D S | nd |
| IM/000398 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | 17 February 1933 |
| MS/850 | Papers concerning nuclear fission by Hans von Halban and Lew Kowarski and correspondence regarding their deposit with the Royal Society | 1939-1942 |
| IM/005270 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea and Lees, D S | nd |
| IM/000394 | Blackett, Patrick Maynard Stuart, Baron Blackett of Chelsea | 1932 |
| IM/000031 | Composite photograph of selection of presidents from the 20th
centuary | nd |
| RR/67/25 | Referee's report by Patrick Maynard Stuart Blackett, on two papers 'General classical theory of spinning particles in a Maxwell field' by Homi Jehangir Bhabha and H C Corben and 'Classical theory of spinning particles in a meson field' by Homi Jehangir Bhabha | 27 December 1940 |
| RR/55/92 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'Experiments with high velocity positive ions V—Further experiments on the disintegration of boron' by John Douglas Cockcroft and Wilfrid Bennett Lewis | January 1936 |
| RR/55/6 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'Artificial radioactivity produced by neutron bombardment' by Edoardo Amaldi, Enrico Fermi, O D'Agostino, F Rasetti and E Segrè | February 1935 |
| RR/64/93 | Referee's report by Patrick Maynard Stuart Blackett, Baron Blackett of Chelsea, on a paper 'The cascade theory of electronic showers' by Lev Davydovitch Landau and G Rumer | 2 December 1937 |
| RR/65/118 | Referee's report by Paytrick Maynard Stuart Blackett, on a paper 'Showers produced by the penetrating cosmic radiation' by W Heitler | 21 March 1938 |
| RR/65/279 | Referee's rpeort by Patrick Maynard Stuart Blackett, on a paper 'Concerning the scattering of fast electrons and of cosmic-ray particles' by Evan James Williams | November 1938 |
| RR/77/80 | Referee's report by Charles Galton Darwin, on a paper 'A negative experiment relating to magnetism and the earth's rotation' by Patrick Maynard Stuart Blackett | 19 May 1952 |
| RR/79/102 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'Observations on the life-time of the neutral π-meson' by B M Anand | 20 May 1953 |
| RR/79/256 | Referee's report by Patrick Maynard Stuart Blackett, on a paper 'Electron inertia and terrestrial magnetism' by Charles Galton Darwin | 1 October 1953 |
| RR/77/79 | Referee's report by Edward Crisp Bullard, on a paper 'A negative experiment relating to magnetism and the earth's rotation' by Patrick Maynard Stuart Blackett | 3 May 1952 |
| RR/79/101 | Letter from Patrick Maynard Stuart Blackett, on a paper 'Observations on the life-time of the neutral π-meson' by B M Anand, to D C Martin | 21 May 1953 |
| PB | Papers of Patrick Maynard Stuart Blackett | 1911-1975 |