| RefNo | Title | Date |
| EC/1897/09 | Broadbent, Sir William Henry: certificate of election to the Royal Society | |
| NLB/23/2/26 | Copy letter from Sir Michael Foster, to Sir William [Henry] Broadbent, Fellow of the Royal Society | 28 February 1901 |
| NLB/25/767 | Copy letter from Robert William Frederick Harrison, to Sir William Henry Broadbent, Fellow of the Royal Society | 22 December 1902 |
| NLB/31/269 | Copy letter from Joseph Larmor, to Sir William Henry Broadbent, [Fellow of the Royal Society] | 18 July 1905 |
| NLB/35/728 | Copy letter from Robert William Frederick Harrison, to Messrs Harrison & Sons | 11 July 1907 |
| NLB/36/719 | Copy letter from Archibald Geikie, to Dr John Hughlings Jackson, Fellow of the Royal Society | 6 December 1907 |
| RR/6/29 | Referee's report by John Marshall, on a paper 'On the structure of the cerebral hemispheres' by William Henry Broadbent | 15 September 1869 |
| RR/6/28 | Letter from Jacob Augustus Lockhart Clarke, to George Gabriel Stokes, regarding a paper 'On the structure of the cerebral hemispheres' by William Henry Broadbent | 17 August 1869 |
| RR/6/26 | Referee's report by Henry Bence Jones, on a paper 'An attempt to apply chemical principles in explanation of the action of poisons' by William Henry Broadbent | 3 July 1868 |
| RR/6/27 | Referee's report by Michael Foster, on a paper 'An attempt to apply chemical principles in explanation of the action of poisons' by William Henry Broadbent | nd [1868] |
| VF/06 | Portrait of Sir William Henry Broadbent by Sir Leslie Ward | 30 October 1902 |
| RR/7/11 | Referee's report by George Rolleston, on a paper 'On the structure of the cerebral hemispheres' by William Henry Broadbent | 10 January 1870 |
| AP/50/1 | Unpublished paper, 'An attempt to apply chemical principles in explanation of the action of poisons' by W H [William Henry] Broadbent | 1868 |
| AP/51/1/2 | Unpublished figure, left and right hemispheres of the brain by William Henry Broadbent | 1869 |
| AP/51/1/3 | Unpublished figure, 'An attempt to represent from tracing "collar of crus", extraventricular thalamus and distribution of its fibres' by William Henry Broadbent | 1869 |
| AP/51/1/5 | Unpublished figure, 'Tracing (made by means of glass) of the plane of fibres exposed by the removal of the superficial convolutions on the under surface of the temporo-sphenoidal lobe' by William Henry Broadbent | 1869 |
| AP/51/1 | Unpublished paper, 'On the structure of the cerebral hemispheres' by W H [William Henry] Broadbent | 1869 |
| AP/51/1/1 | Unpublished manuscript, 'On the structure of the cerebral hemispheres' by W H [William Henry] Broadbent | |