| Reference number | Title | Date |
| IM/002667 | Leathes, John Beresford | nd |
| EC/1911/09 | Leathes, John Beresford: certificate of election to the Royal Society | |
| IM/002666 | Leathes, John Beresford | nd |
| RR/43/91 | Referee's report by John Beresford Leathes, on a paper 'The effect of light on the oxidation of fats' by Colin Henry Lea | February 1931 |
| RR/33/95 | Referee's report by John Beresford Leathes, on a paper 'The excretion of uric acid by the kidney' by Hans Gremels and Richard Bodo | June 1926 |
| RR/34/80 | Referee's report by John Beresford Leathes, on a paper 'The measurement of percentage haemolysis.—II' by Eric Ponder | 3 January 1927 |
| RR/28/122 | Referee's report by John Beresford Leathes, on a paper 'The basal metabolism of a growing pig' by Thomas Deighton | [July 1923] |
| RR/34/79 | Referee's report by John Beresford Leathes, on a paper 'A study of certain forms of inhibition and acceleration of haemolysis' by Eric Ponder | [February 1926] |
| NLB/58/383 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to Professor [John Beresford] Leathes, FRS | 28 April 1920 |
| RR/34/15 | Referee's report by John Beresford Leathes, on a paper 'The fate of the sugar disappearing under the action of insulin' by Charles Herbert Best, J P Hoet and H P Marks | [March 1926] |
| RR/63/80 | Referee's report by John Beresford Leathes, on a paper 'Pro-gonadotropic sera' by I W Rowlands | June 1937 |
| RR/31/85 | Referee's report by John Beresford Leathes, on a paper 'Uric Acid in the Pieridæ : A quantitative study' by Vincent Brian Wigglesworth | 24 September 1924 |
| RR/41/110 | Referee's report by John Beresford Leathes, on a paper 'On the optimum hydrogen ion concentration and temperature of the style enzyme of pecten maximus' by Alistair Graham | December 1930 |
| RR/40/82 | Referee's report by John Beresford Leathes, on a paper 'Monomolecular films of irradiated ergosterol in relation to the production of vitamin D' by Otto Rosenheim | October 1929 |
| RR/47/10 | Referee's report by John Beresford Leathes, on a paper 'The effects on dogs of large doses of calciferol (vitamin D)' by Henry Hallett Dale, A Marble and H P Marks | August 1932 |
| RR/45/78 | Referee's report by John Beresford Leathes, on a paper 'Regularities in the composition of fruit-coat fats' by Thomas Percy Hilditch | [November 1932] |
| RR/51/72 | Referee's report by John Beresford Leathes, on a paper 'On the coagulation of muscle plasma. II. The solubility of myosin' by E C Smith | [December 1933] |
| RR/54/43 | Referee's report by John Beresford Leathes, on a paper 'Experimental sodium chloride deficiency in man' by Robert Alexander McCance | November 1935 |
| RR/60/1 | Referee's report by John Beresford Leathes, on a paper 'The precursors in cows’ blood of milk fat and other milk constituents' by W Richards Graham, T S G Jones and Herbert Davenport Kay | January 1936 |
| RR/58/74 | Referee's report by John Beresford Leathes, on a paper 'Studies on the Onychophora, I. On the feeding, digestion, excretion and food storage of peripatopsis' by Sidnie Milana Manton | November 1936 |
| RR/58/91 | Referee's report by John Beresford Leathes, on a paper 'The response of the kidney to an alkalosis during salt deficiency' by Robert Alexander McCance and Elsie May Widdowson | February 1936 |
| RR/58/39 | Referee's report by John Beresford Leathes, on a paper 'The progesterone-like action of testosterone and certain related compounds' by
M Klein and Alan Sterling Parkes | October 1936 |
| RR/65/62 | Referee's report by John Beresford Leathes, on a paper 'Carbohydrate metabolism and muscular exercise' by F C Courtice, Claude Gordon Douglas and J G Priestley | November 1938 |
| NLB/67/629 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Beresford] Leathes, FRS | 3 February 1925 |
| NLB/65/107 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir John [Rose] Bradford, FRS | 31 July 1923 |
| NLB/65/110 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir John [Rose] Bradford, FRS | 31 July 1923 |
| NLB/70/34 | Copy letter from Henry Hallett Dale, Secretary of the Royal Society; to Professor [John Beresford] Leathes, FRS | 6 December 1926 |
| NLB/67/123 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Dugald Clerk, KBE, FRS; also sent to [Sydney] Chapman FRS; [Frederick George] Donnan FRS; [Francis William] Aston FRS; [George Clarke] Simpson FRS; [Henry Hallett] Dale FRS; [James Hartley] Ashworth FRS; [Frederick Frost] Blackman FRS; [John Beresford] Leathes FRS | 30 October 1924 |
| NLB/69/218 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [Thomas Renton] Elliott, FRS | 4 February 1926 |
| NLB/70/224 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John Beresford] Leathes, FRS; 2 Manchester Road, Sheffield | 8 January 1927 |
| NLB/69/726 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [John Beresford] Leathes, FRS | 15 September 1926 |
| RR/22/53 | Referee's report by John Beresford Leathes, on a paper 'The measurement of the rate of heat-loss at body temperature by convection, radiation, and evaporation' by Martin Flack, O W Griffith and Leonard Erskine Hill | 2 November 1915 |
| NLB/65/205 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to Sir John [Rose] Bradford, KCMG, FRS | 20 September 1923 |
| RR/30/85 | Referee's report by John Beresford Leathes, on a paper 'Quantitative studies concerning the distribution of arginase in fishes and other animals' by Andrew Hunter and James A Dauphinee | [July 1924] |
| RR/37/71 | Referee's report by John Beresford Leathes, on a paper 'Relationships between chemical composition of vegetable seed fats and their botanical origin' by Thomas Percy Hilditch | 9 May 1928 |
| RR/37/58 | Referee's report by John Beresford Leathes, on a paper 'A study of the metabolism of two breeds of pig: with some remarks on a third' by J Deighton | October 1928 |
| RR/28/93 | Referee's report by John Beresford Leathes, on a paper 'The titration of amino- and carboxyl-groups in amino-acids, polypeptides, etc. Parts I—III.—Investigations with aqueous solutions' by Leslie J Harris | 25 August 1923 |
| RR/30/86 | Referee's report by John Beresford Leathes, on a paper 'An approximative colorimetric method for the determination of urea, with an application to the detection and quantitative estimation of arginase' by Andrew Hunter and James A Dauphinee | [July 1924] |
| RR/34/17 | Referee's report by John Beresford Leathes, on a paper 'Oxidation and storage of glucose under the action of insulin' by Charles Herbert Best, Henry Hallett Dale, J P Hoet and H P Marks | [April 1926] |
| RR/34/101 | Referee's report by John Beresford Leathes, on a paper 'The isolation of some hitherto undescribed products of hydrolysis of proteins. —Part II' by Samuel Barnett Schryver and H W Buston | [February 1926] |
| RR/59/80 | Referee's report by John Beresford Leathes, on a paper 'The effect of thyroxine on milk secretion and on the phosphatase of the blood and milk of the lactating cow' by Sydney John Folley and Paul White | [January 1936] |
| MC/26/137 | Letter from [John Beresford] Leathes, Department of Pathological Chemistry, University of Toronto, to The Secretaries of the Royal Society | 19 May 1911 |
| MC/39 | Volume 39 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1925 |
| MC/39/69 | Letter from [John Beresford] Leathes, 2 Manchester Road, Sheffield, to [Francis Alexander] Towle | 2 February 1925 |