| Reference number | Title | Date |
| RR/38/30 | Referee's report by John William Heslop-Harrison, on a paper 'Megaspore development in Oenothera rubricalyx, with a note on chromosome linkage in Oenothera angustissima' by Reginald Ruggles Gates and F M L Sheffield | October 1929 |
| NLB/54/814 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to the Secretary of the Research Department | 9 October 1917 |
| RR/35/106 | Referee's report by James Hartley Ashworth, on a paper 'Induced changes in the pigmentation of the pupœ of the butterfly Pieris napi L., and their inheritance' by John William Heslop Harrison | 25 November 1927 |
| RR/33/96 | Referee's report by Edward Meyrick, on a paper 'The induction of melanism in the lepidoptera and its subsequent inheritance' by John William Heslop Harrison and F C Garrett | 8 December 1925 |
| RR/43/36 | Referee's report by John William Heslop-Harrison, on a paper 'Meiosis in Oenothera purpurata and Oe. blandina' by Reginald Ruggles Gates and K. M. Goodwin | July 1931 |
| RR/38/31 | Referee's report by John William Heslop-Harrison, on a paper 'Chromosome linkage in certain oenothera hybrids' by Reginald Ruggles Gates and F M L Sheffield | July 1928 |
| RR/43/115 | Referee's report by John William Heslop-Harrison, on a paper 'The chromosome constitution of the pomoideæ' by A A Moffett | May 1931 |
| RR/43/72 | Referee's report by John William Heslop-Harrison, on a paper 'Embryo-sac formation in diploid and polyploid species of roseæ' by C C Hurst | 10 July 1931 |
| NLB/68/918 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Sidney Harmer, KBE, FRS | 30 November 1925 |
| NLB/71/704 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [John William] Heslop Harrison, FRS | 9 October 1928 |
| EC/1928/08 | Heslop Harrison, John William: certificate of election to the Royal Society | |
| MDA/C/6/2 | Papers relating to an award from the Darwin Research Fund to John William Heslop Harrison | February-March 1935 |
| RR/35/105 | Referee's report by James Hartley Ashworth, on a paper 'A further induction of melanism in the lepidopterous Insect, Selenia biiunaria esp., and its inheritance' by John William Heslop Harrison | 25 November 1927 |
| RR/45/22 | Referee's report by John William Heslop-Harrison, on a paper 'Critical evidence of parasynapsis in Oenothera' by David Guthrie Catcheside | nd [July 1931] |
| RR/53/104 | Referee's report by Augustus Daniel Imms, on a paper 'The experimental induction of melanism, and other effects, in the geometrid moth Selenia bilunari esp' by John William Heslop-Harrison | [November 1934] |
| NLB/69/1 | Copy letter from Henry Hallett Dale, Secretary of the Royal Society; to Sir Sidney [Frederic] Harmer K.B.E. FRS | 10 December 1925 |
| RR/53/103 | Referee's report by John Burdon Sanderson Haldane, on a paper 'The experimental induction of melanism, and other effects, in the geometrid moth Selenia bilunari esp' by John William Heslop-Harrison | [June 1934] |
| RR/34/2 | Referee's report by James Hartley Ashworth, on a paper 'Experiments on the egg-laying instincts of the sawfly, Pontania salicis Christ., and their bearing on the inheritance of acquired characters; with some remarks on a new principle in evolution' by John William Heslop-Harrison | [December 1926] |
| RR/41/32 | Referee's report by John William Heslop-Harrison, on a paper 'The inheritance of sinistrality in Limnaea peregra (Mollusca, Pulmonata)' by Arthur Edwin Boycott, C Diver, S L Garstang, and F M Turner | May 1930 |
| RR/53/105 | Second referee's report by Augustus Daniel Imms, on a paper 'The experimental induction of melanism, and other effects, in the geometrid moth Selenia bilunari esp' by John William Heslop-Harrison | [December 1934] |