| RefNo | Title | Date |
| EC/1910/14 | Plimmer, Henry George: certificate of election to the Royal Society | |
| RR/18/35 | Referee's report by Henry George Plimmer, on a paper 'Enumerative studies on Trypanosoma gambiense and Trypanosoma rhodesiense in rats, guinea-pigs, and rabbits; periodic variations disclosed' by H B Fantham and J G Thomson | October 1910 |
| NLB/27/596 | Copy letter from Robert William Frederick Harrison, to Dr Henry George Plimmer, [Fellow of the Royal Society] | 26 October 1903 |
| NLB/30/670 | Copy letter from Robert William Frederick Harrison, to Henry George Plimmer, [Fellow of the Royal Society]' | 4 May 1905 |
| NLB/29/443 | Copy letter from Robert William Frederick Harrison, to Dr Augustus Desire Waller, Fellow of the Royal Society | 17 October 1904 |
| NLB/31/728 | Copy letter from Robert William Frederick Harrison, to Henry George Plimmer, [Fellow of the Royal Society] | 6 November 1905 |
| NLB/35/507 | Copy letter from Robert William Frederick Harrison, to Henry George Plimmer | 7 June 1907 |
| NLB/37/596 | Copy letter from Robert William Frederick Harrison to Dr J D Thomson, Lister Institute, Chelsea Bridge Road, SW | 11 April 1908 |
| NLB/43/672 | Copy letter from Robert William Frederick Harrison, to Henry George Plimmer, Fellow of the Royal Society | 8 March 1911 |
| NLB/37/550 | Copy letter from Robert William Frederick Harrison to H [Henry] G [George] Plimmer | 4 April 1908 |
| NLB/37/650 | Copy letter from Robert William Frederick Harrison to Captain H R Bateman, Royal Army Medical Corps, Royal Army Medical College, Millbank, Sw. | 27 April 1908 |
| NLB/40/595 | Copy letter from John Rose Bradford to H [Henry] G [George] Plimmer and Captain Fry | 30 June 1909 |
| NLB/39/574 | Copy letter from Robert William Frederick Harrison to H [Henry] G [George] Plimmer | 8 February 1909 |
| NLB/42/377 | Copy letter from Robert William Frederick Harrison to Messrs Harrison & Sons | 1 June 1910 |
| NLB/42/453 | Copy letter from Robert William Frederick Harrison to H [Henry] G [George] Plimmer FRS, 2 Hall Road, NW | 14 June 1910 |
| NLB/42/403 | Copy letter from Theodore E James to Messrs Harrison & Sons | 6 June 1910 |
| NLB/42/807 | Copy letter from Robert William Frederick Harrison to H [Henry] G [George] Plimmer FRS | 14 October 1910 |
| NLB/44/540 | Copy letter from Robert William Frederick Harrison [signed by Theordore E James] to H [Henry] G [George] Plimeer FRS | 31 July 1911 |
| NLB/44/273 | Copy letter from Robert William Frederick Harrison to H [Henry] G [George] Plimmer FRS | 2 June 1911 |
| NLB/43/416 | Copy letter from Robert William Frederick Harrison, to Henry George Plimmer, Fellow of the Royal Society | 5 January 1911 |
| NLB/45/717 | Copy letter from Robert William Frederick Harrison to H [Henry] G [George] Plimmer FRS | 29 April 1912 |
| NLB/46/420 | Copy letter from Robert William Frederick Harrison, to Henry George Plimmer, Fellow of the Royal Society | 29 July 1912 |
| NLB/46/738 | Copy letter from Robert William Frederick Harrison, to [Henry George] Plimmer, Fellow of the Royal Society | 26 October 1912 |
| NLB/45/167 | Copy letter from John Rose Bradford to H [Henry G [George] Plimmer FRS | 10 January 1912 |
| MC/20/291 | Letter from [Henry George] Plimmer, 3 Hall Road, to [Robert William Frederick] Harrison | 7 November 1905 |
| NLB/48/87 | Copy letter from Robert William Frederick Harrison, to Henry George Plimmer, Fellow of the Royal Society | 9 May 1913 |
| RR/20/17 | Referee's report by Henry George Plimmer, on a paper 'Trypanosome diseases of domestic animals in Nyasaland [Malawi] III - Trypanosoma pecorum' by David Bruce, David Harvey, A E Hamerton and Lady Bruce | April 1913 |
| NLB/51/241 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Henry George Plimmer FRS | 22 January 1915 |
| NLB/48/748 | Copy letter from Robert William Frederick Harrison, to [Henry George] Plimmer, Fellow of the Royal Society | 4 October 1913 |
| NLB/48/524 | Copy letter from Robert William Frederick Harrison, to [Henry George] Plimmer, Fellow of the Royal Society | 19 July 1913 |
| NLB/55/215 | Copy letter from [William Bate] Hardy, Secretary of the Royal Society and FRS; to Professor [Henry George] Plimmer, FRS | 19 January 1918 |
| RR/21/146 | Referee's report by Henry George Plimmer, on a paper 'The cultivation of human tumour tissue in vitro. Preliminary note' by David Thomson and John Gordon Thomson | nd [1914] |
| RR/18/75 | Referee's report by Henry George Plimmer, on a paper 'A case of Blackwater fever' by Ronald Ross, David Thomson and Simpson | October 1910 |
| RR/21/159 | Referee's report by Henry George Plimmer, on a paper 'On the effect of various tissue extracts upon the growth of adult mammalian cells in vitro' by Albert J Walton | [July 1914] |
| NLB/54/284 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [Charles Scott] Sherrington, Chairman of the Physiology Committee and FRS | 21 March 1917 |
| NLB/54/493 | Copy letter from [Robert William Frederick Harrison, Assistant Secretary of the Royal Society]; to Professor [Henry George] Plimmer, FRS | 1 June 1917 |
| RR/18/83 | Referee's report by Henry George Plimmer, on a paper 'On hœmoglobin metabolism in malarial fever' by G C E Simpson | October 1910 |
| RR/18/73 | Referee's report by Henry George Plimmer, on a paper 'A case of sleeping sickness studied by precise enumerative methods: Further observations' by Ronald Ross and David Thomson | October 1910 |
| RR/20/13 | Referee's report by Henry George Plimmer, on a paper 'The Trypanosomes causing dourine (mal de boit or bechalseuche)' by B Blacklock and W Yorke | June 1913 |
| RR/18/72 | Referee's report by Henry George Plimmer, on a paper 'Some enumerative studies on malarial fever' by Ronald Ross and David Thomson | October 1910 |
| RR/24/49 | Referee's report by Henry George Plimmer, on a paper 'Morphological studies in the life-histories of bacteria' by Edward C Hort | [March 1917] |
| RR/20/141 | Referee's report by Henry George Plimmer, on a paper 'The growth and sporulation of the benign and malignant tertian malarial parasites in the culture tube and in the human host' by John Gordon Thomson and David Thomson | June 1913 |
| RR/18/34 | Referee's report by Henry George Plimmer, on a paper 'The life-history of Trypanosoma gambiense and Trypanosoma rhodesiense as seen in rats and guinea-pigs' by H B Fantham | October 1910 |
| RR/19/108 | Referee's report by Henry George Plimmer, on a paper 'The development of Trypanosomes in the presence of auxetics' by Edward Halford Ross | [July 1912] |
| RR/21/160 | Referee's report by Henry George Plimmer, on a paper 'Variations in the growth of adult mammalian tissue in autogenous and homogenous plasma' by Albert J Walton | 28 February 1914 |
| RR/24/92 | Referee's report by Henry George Plimmer, on a paper 'On the alleged increase of cancer' by Walter Francis Willcox | [February 1917] |
| NLB/55/643 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to [Professor John Bretland] Farmer, FRS | 06 July 1918 |
| NLB/42/433 | Copy letter from Robert William Frederick Harrison to J [Joseph] Barcroft, FRS [Fellow of the Royal Society] | 13 June 1910 |
| RR/18/74 | Referee's report by Henry George Plimmer, on a paper 'Experiments on the treatment of animals infected with trypanosomes, by means of atoxyl, vaccines, cold, X-Rays, and leucocytic extract; enumerative methods employed' by Ronald Ross and David Thomson | October 1910 |
| RR/20/34 | Referee's report by Henry George Plimmer, on a paper 'Some trypanosomes recovered from the wild game in western Uganda' by H L Duke | June 1913 |
| RR/21/158 | Referee's report by Henry George Plimmer, on a paper 'On the variation in the growth of mammalian tissue in vitro according to the age of the animal' by Albert J Walton | [January 1915] |
| MC/20 | Volume 20 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1905 |
| NLB/31/750 | Copy letter from Robert Frederick William Harrison, to Henry George Plimmer, [Fellow of the Royal Society] | 8 November 1905 |