| Reference number | Title | Date |
| EC/1929/11 | Mellanby, John: certificate of election to the Royal Society | |
| RR/42/5 | Referee's report by John Mellanby, on a paper 'On certain correction terms required in the equations for the kinetics of simple hœmolysis' by Eric Ponder | October 1931 |
| NLB/38/194 | Copy letter from Robert William Frederick Harrison, to John Mellanby [Fellow of the Royal Society] | 24 June 1908 |
| RR/40/7 | Referee's report by John James Rickard Macleod, on a paper 'Prothrombase—Its preparation and properties' by John Mellanby | September 1930 |
| RR/40/41 | Referee's report by John Mellanby, on a paper 'The influence of Witte's "peptone" and of digestion of blood platelets and plasma' by John William Pickering | March 1929 |
| RR/42/6 | Referee's report by John Mellanby, on a paper 'The inhabitory effect of haemoglobin liberated during haemolysis' by Eric Ponder | June 1931 |
| RR/51/36 | Referee's report by Henry Hallett Dale, on a paper 'Heparin and blood coagulation' by John Mellanby | [1934] |
| RR/48/127 | Referee's report by Harold Ward Dudley, on a paper 'Secretin' by John Mellanby | 15 July 1932 |
| RR/50/59 | Referee's report by Harold Ward Dudley, on a paper 'Thrombase—its preparation and properties' by John Mellanby | 25 February 1933 |
| RR/63/19 | Referee's report by John Mellanby, on a paper 'On the morphology of the alimentary canal, process of feeding, and physiology of digestion of the nudibranch mollusc forunna romentosa (Cuvier)' by Norman Millott | 22 February 1937 |
| RR/67/287 | Referee's report by Charles Arthur Lovatt Evans, on paper 'The reactions of the urinary bladder of the cat under conditions of constant pressure' by John Mellanby and C L G Pratt | May 1939 |
| RR/67/288 | Referee's report by Charles Arthur Lovatt Evans, on paper 'The reactions of the urinary bladder of the cat under conditions of constant volume' by John Mellanby and C L G Pratt | October 1939 |
| RR/65/185 | Referee's report by Alan Nigel Drury, on a paper 'A quantitative investigation into the enterohepatic circulation of bile salts in the cat' by John Mellanby and S F Suffolk | September 1938 |
| RR/65/184 | Referee's report by Francis John Wesley Roughton, on a paper 'The coagulation of plasma by trypsin' by John Mellanby and C L G Pratt | March 1938 |
| NLB/67/577 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [John] Mellanby; St Thomas' Hospital, S.E.1. | 23 January 1925 |
| RR/17/321 | Referee's report by Thomas Gregor Brodie, on a report 'Diptheria antitoxin' by John Mellanby | June 1908 |
| RR/64/96 | Referee's report by John Mellanby, on a paper 'Quantitative correlation of some observed variables in the parasympathetic submaxillary saliva of the cat' by G O Langstroth, D R McRae and G W Stavraky | [May 1937] |
| RR/53/148 | Referee's report by John Mellanby, on a paper 'The combination between methæmoglobin and peroxides : hydrogen peroxide and ethyl hydroperoxide' by David Keilin and E F Hartree | [October 1934] |
| RR/51/37 | Referee's report by Harold Ward Dudley, on a paper 'The supposed coagulation of oxalate plasma by trypsin' by John Mellanby | 20 December 1934 |
| RR/61/103 | Referee's report by John Mellanby, on a paper 'Pituitary control of alimentary blood flow and secretion - The effect of posterior pituitary extract on the alimentary secretions of intact animals' by W C Cutting, Edward Charles Dodds, R L Noble and P C Williams | February 1937 |
| RR/61/104 | Referee's report by John Mellanby, on a paper 'Pituitary control of alimentary blood flow and secretion - The effect of alterations in blood flow on gastric secretion' by W C Cutting, Edward Charles Dodds, R L Noble and P C Williams | February 1937 |
| RR/61/105 | Referee's report by John Mellanby, on a paper 'Pituitary control of alimentary blood flow and secretion - Gastric secretion and blood flow in hypophysectomized animals' by W C Cutting, Edward Charles Dodds, R L Noble and P C Williams | February 1937 |
| RR/61/112 | Referee's report by John Mellanby, on a paper 'Pituitary control of alimentary blood flow and secretion - Changes in the stomach produced by the administration of posterior pituitary extract' by Edward Charles Dodds, R L Noble, R W Scarff and P C.Williams | 3 February 1937 |
| RR/64/95 | Referee's report by John Mellanby, on a paper 'The secretion of protein material in the parasympathetic submaxillary saliva' by G O Langstroth, D R McRae and G W Stavraky | 2 May 1937 |