| Reference number | Title | Date |
| MM/10/27 | Letter from W Bulloch, London Hospital Medical College, to HW Robinson | 15 March 1934 |
| MM/10/28 | Letter from W Bulloch, London Hospital Medical College, to HW Robinson | 20 March 1934 |
| MM/10/29 | Letter from W Bulloch, London Hospital Medical College, to HW Robinson | 27 June 1936 |
| MM/10/24 | Letter from MW Beijerinck, Gorssel, to W Bulloch | 4 May 1926 |
| IM/000654 | Bulloch, William | nd |
| NLB/73/350 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [William] Bullcoh, FRS | 19 June 1931 |
| NLB/37/241 | Copy letter from Robert William Frederick Harrison to Harrison & Sons | 19 February 1908 |
| NLB/37/227 | Copy letter from Robert William Frederick Harrison to Harrison & Sons | 18 February 1908 |
| NLB/50/21 | Copy letter from Robert William Frederick Harrison, to Dr [William] Bulloch, Fellow of the Royal Society | 8 April 1914 |
| NLB/50/502 | Copy letter from Robert William Frederick Harrison, to Dr [William] Bulloch, Fellow of the Royal Society | 21 July 1914 |
| RR/32/105 | Referee's report by William Bulloch, on a paper 'The inhibitory effect of blood serum on haemolysis. —II' by Eric Ponder | June 1925 |
| RR/29/40 | Referee's report by William Bulloch, on a paper 'The inhibitory effect of blood serum on haemolysis' by Eric Ponder | June 1923 |
| RR/32/18 | Referee's report by William Bulloch, on a paper 'Studies on the nature of the immunity reaction. Part III - The possible eugynic value of pneumococcal anitgen' by Richard R Armstrong | April 1925 |
| RR/28/134 | Referee's report by William Bulloch, on a paper 'A comparison of the activities antiseptics on bacteria and on leucocytes' by Alexander Fleming | [January 1924] |
| RR/32/92 | Referee's report by William Bulloch, on a paper 'The cytology of tar tumours' by Reginald James Ludford | July 1925 |
| RR/30/15 | Referee's report by William Bulloch, on a paper 'A preliminary communication an certain phases of leucocytic activity not previously recorded. Section I. The movement of the cell granules' by C F Boud | [March 1924] |
| NLB/53/655 | Copy letter from [William Bate] Hardy, Secretary of the Royal Society and FRS; to Professor [William] Bulloch, FRS | 22 November 1916 |
| NLB/62/725 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to Professor [William] Bulloch, FRS | 24 April 1922 |
| NLB/58/543 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Professor [William] Bulloch, FRS | 17 May 1920 |
| RR/39/87 | Referee's report by William Bulloch, on a paper 'The composition of diphtheria toxin— Antitoxin floccules' by J R Marrack and Frank Campbell Smith | 17 November 1929 |
| NLB/66/106 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof [William] Bulloch, FRS. | 22 February 1924 |
| NLB/66/127 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Major-General Sir Percival Wilkinson, Secretary General of the Order of St.John of Jerusalem, St. John's Gate, Clerkenwell, E.C.1 | 26 February 1924 |
| RR/24/94 | Referee's report by William Bulloch, on a paper 'On the alleged increase of cancer' by Walter Francis Willcox | 5 March 1917 |
| RR/32/10 | Referee's report by William Bulloch, on a paper 'Studies on the nature of the immunity reaction. Part I - An experimental study of pneumococcal immunity' by Richard R Armstrong | April 1925 |
| NLB/62/814 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to Professor [William] Bulloch, FRS | 11 May 1922 |
| NLB/64/839 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir John Rose Bradford, K.C.M.G FRS | 28 June 1923 |
| NLB/68/251 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir John Rose Bradford, KCMG, FRS | 5 June 1925 |
| NLB/66/797 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir John Rose Bradford, K.C.M.G FRS | 11 July 1924 |
| NLB/68/357 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir John Rose Bradford, KCMG, FRS | 24 June 1925 |
| NLB/69/591 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [William] Bulloch, FRS | 12 June 1926 |
| NLB/73/317 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [William] Bulloch, FRS | 29 May 1931 |
| CD/44/37 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society, to Professor [William] Bulloch | 22 February 1924 |
| MM/18/149 | Letter from Clifford Dobell to William Bulloch | 3-4 October 1928 |
| RR/23/62 | Referee's report by William Bulloch, on a paper 'Observations and experiments on the susceptibility and immunity of rats towards Jensen’s Rat Sarcoma' by J C Mottram and Sidney Russ | November 1916 |
| EC/1913/02 | Bulloch, William: certificate of election to the Royal Society | |
| NLB/69/602 | Copy letter from [James Hopwood Jeans], Secretary of the Royal Society; to Prof. [John Charles Grant] Ledingham, FRS | 17 June 1926 |
| IM/000653 | Bulloch, William | 1922 |
| RR/31/37 | Referee's report by William Bulloch, on a paper 'Blood coagulation, anti-coagulants and haemolysis' by John William Pickering and F E Taylor | [June 1924] |
| RR/32/15 | Referee's report by William Bulloch, on a paper 'Studies on the nature of the immunity reaction. Part II. - A comparison of the antigenic properties of sensitised and raw pneumococcal vaccines' by Richard R Armstrong | April 1925 |
| MC/25/107 | Letter from Leonard [Erskine] Hill, Osborne House, Loughton, Essex, to Mr [Robert] Harrison, [Royal Society] | 17 October 1910 |
| MC/21/88 | Letter from [William] Bulloch, The London Hospital Medical College (University of London), Turner Street, Mil End, London, to the Royal Society | 3 March 1906 |
| NLB/32/355 | Copy letter from Robert William Frederick Harrison, to Dr William Bulloch, London Hospital Medical College | 26 February 1906 |
| MC/21/87 | Letter from [William] Bulloch, The London Hospital Medical College (University of London), Turner Street, Mil End, London, to Robert [William Frederick] Harrison | 24 February 1906 |
| IM/000652 | Bulloch, William | c 1911 |