| Reference number | Title | Date |
| RR/10/291 | Referee's report by Arthur Cayley, on a paper 'On certain geometrical theorems' by William Henry Leighton Russell | 29 July 1889 |
| AP/57/4 | On the Integration of Algebraical Functions, with Illustrations in Mechanics | 1875 |
| MM/14/151 | 'On Linear Differential Equations No. 2', by WHL Russell | January 1870 |
| AP/66/14 | On certain Geometrical Theorems | 1889 |
| AP/51/12 | On the Mechanical Description of Curves | 1869 |
| NLB/5/1066 | Copy letter from an unknown correspondent, to Messrs Harrison & Sons | 31 December 1891 |
| NLB/8/736 | Copy letter from Herbert Rix, to Dr James Whitbread Lee Glaisher, Fellow of the Royal Society | 15 December 1893 |
| RR/2/209 | Referee's report by George Peacock, on a paper 'On the theory of definite integrals' by William Henry Leighton Russell | 28 February 1855 |
| RR/2/210 | Referee's report by John Couch Adams, on a paper 'On the theory of definite integrals' by William Henry Leighton Russell | 23 May 1855 |
| RR/4/224 | Referee's report by James Joseph Sylvester, on a paper 'On the calculus of symbols - third memoir' by William Henry Leighton Russell | 2 July 1862 |
| RR/4/223 | Referee's report by William Spottiswoode, on a paper 'On the calculus of symbols - third memoir' by William Henry Leighton Russell | 22 June 1862 |
| RR/4/228 | Referee's report by Philip Kelland, on a paper 'On the calculus of symbols, with applications to the theory of differential equations' by William Henry Leighton Russell | 19 March 1861 |
| RR/4/221 | Referee's report by George Boole, on a paper 'On the calculus of symbols - second memoir' by William Henry Leighton Russell | 13 May 1862 |
| RR/4/222 | Referee's report by William Spottiswoode, on a paper 'On the calculus of symbols - second memoir' by William Henry Leighton Russell | 7 March 1862 |
| RR/4/225 | Referee's report by James Joseph Sylvester, on a paper 'On the calculus of functions' by William Henry Leighton Russell | 2 June 1862 |
| RR/5/224 | Referee's report by Henry John Stephen Smith, on a paper 'On the calculus of symbols.—Third memoir' by William Henry Leighton Russell | 14 October 1863 |
| RR/5/228 | Letter to George Salmon, regarding a paper 'On the calculus of symbols.— Fourth memoir. With applications to the theory of non-linear differential equations' by William Henry Leighton Russell | 19 February 1864 |
| RR/5/227 | Referee's report by George Boole, on a paper 'On the calculus of symbols.— Fourth memoir. With applications to the theory of non-linear differential equations' by William Henry Leighton Russell | nd [1864] |
| RR/6/258 | Referee's report by Robert Willis, on a paper 'On the mechanical description of curves' by William Henry Leighton Russell | 28 July 1869 |
| RR/7/401 | Referee's report by Robert Harley, on a paper 'On the integration of algebraical functions, with illustrations in mechanics' by William Henry Leighton Russell | 29 March 1875 |
| RR/7/402 | Referee's report by Arthur Cayley, on a paper 'On the integration of algebraical functions, with illustrations in mechanics' by William Henry Leighton Russell | 21 April 1875 |
| RR/10/292 | Referee's report by Andrew Russell Forsyth, on a paper 'On certain geometrical theorems' by William Henry Leighton Russell | 24 July 1889 |
| RR/4/226 | Referee's report by William Spottiswoode, on a paper 'On the calculus of functions' by William Henry Leighton Russell | 21 January 1862 |
| RR/5/225 | Referee's report by Henry John Stephen Smith, on a paper 'On the calculus of symbols.— Fourth memoir. With applications to the theory of non-linear differential equations' by William Henry Leighton Russell | 10 April 1864 |
| RR/5/223 | Referee's report by William Spottiswoode, on a paper 'On the calculus of symbols.—Third memoir' by William Henry Leighton Russell | 16 June 1863 |
| RR/4/227 | Referee's report by George Boole, on a paper 'On the calculus of symbols, with applications to the theory of differential equations' by William Henry Leighton Russell | 1861 |
| EC/1866/13 | Russell, William Henry Leighton: certificate of election to the Royal Society | |
| RR/5/229 | Referee's report by George Salmon, on a paper 'On the calculus of symbols.— Fourth memoir. With applications to the theory of non-linear differential equations' by William Henry Leighton Russell | 19 April 1864 |
| RR/5/226 | Referee's report by Henry John Stephen Smith, on a paper 'On the calculus of symbols.— Fifth memoir. With applications to linear partial differential equations, and the calculus of functions' by William Henry Leighton Russell | 22 June 1864 |