| Reference number | Title | Date |
| EC/1907/14 | Pocklington, Henry Cabourn: certificate of election to the Royal Society | |
| NLB/40/769 | Copy letter from Joseph Larmor to Dr H [Henry] C [Cabourn] Pockington FRS | August 1909 |
| NLB/40/745 | Copy letter from Robert William Frederick Harrison to Sir Joseph Larmor, Sec RS | 29 July 1909 |
| NLB/11/599 | Copy letter from Herbert Rix, to Messrs Harrison & Sons | 31 July 1895 |
| NLB/35/527 | Copy letter from Robert William Frederick Harrison, to Messrs Harrison & Sons | 10 June 1907 |
| NLB/37/488 | Copy letter from Robert William Frederick Harrison to Professor Wm [William] Hicks, Fellow of the Royal Society, Chairman of the Physics & Chemistry Sectional Committee | 27 March 1908 |
| MC/24/110 | Letter from [Henry Cabourn] Pocklington 11 Regent Park Road, to [Royal Society] | 19 October 1909 |
| NLB/41/266 | Copy letter from Joseph Larmor, to [Henry Cabourn Pocklington, Fellow of the Royal Society] | 19 November 1909 |
| RR/19/79 | Referee's report by Henry Cabourn Pocklington, on a paper 'Optical rotatory dispersion.–Part I. The natural and magnetic rotatory dispersion in quartz of light in the visible region of the spectrum' by Thomas Martin Lowry | [June 1912] |
| RR/12/373 | Detailed referee's report by William Mitchinson Hicks, on a paper 'The complete system of the periods of a hollow vortex ring' by Henry Cabourn Pocklington | [1895] |
| RR/12/374 | Letter from Henry Cabourn Pocklington, regarding a paper 'The complete system of the periods of a hollow vortex ring' by Henry Cabourn Pocklington | 16 July 1895 |
| RR/12/375 | Second letter from Henry Cabourn Pocklington, regarding a paper 'The complete system of the periods of a hollow vortex ring' by Henry Cabourn Pocklington | [1895] |
| RR/12/370 | Letter from Augustus Edward Hough Love, to John William Strutt, Lord Rayleigh, regarding a paper 'The complete system of the periods of a hollow vortex ring' by Henry Cabourn Pocklington | 13 June 1895 |
| RR/12/372 | Referee's report by William Mitchinson Hicks, on a paper 'The complete system of the periods of a hollow vortex ring' by Henry Cabourn Pocklington | 23 June 1895 |
| RR/12/371 | Referee's report by Augustus Edward Hough Love, on a paper 'The complete system of the periods of a hollow vortex ring' by Henry Cabourn Pocklington | 13 June 1895 |
| RR/17/398 | Referee's report by Henry Cabourn Pocklington, on a paper 'On the nature of the diffraction figures due to the heliometer' by Philip Francis Everitt | October 1909 |
| RR/17/363 | Referee's report by Henry Cabourn Pocklington, on a paper 'The effect of hydrogen on the discharge of negative electricity from hot platinum' by Harold Albert Wilson | February 1908 |
| RR/12/376 | Letter from William Mitchinson Hicks, to John William Strutt, 3rd Baron Rayleigh, regarding a paper 'The complete system of the periods of a hollow vortex ring' by Henry Cabourn Pocklington | 21 July 1895 |
| RR/24/1 | Referee's report by Henry Cabourn Pocklington, on a paper 'The Lommel-Weber function and its application to the problem of electric waves on a thin anchor ring' by J R Airey | [January 1918] |
| NLB/41/113 | Copy letter from Robert William Frederick Harrison, to Dr Henry Cabourn Pocklington, Fellow of the Royal Society | 15 October 1909 |