| Reference number | Title | Date |
| GLB/65/112/13 | Application by J Z Young to Science Research Council for a Research Grant | [1969] |
| IM/GA/WRS/8698 | Young, John Zachary | nd |
| IM/GA/SGRS/8421 | Young, John Zachary | 1985 |
| GLB/65/66/40 | J Z Young, Department of Anatomy, University College London to Brown | 17 April 1964 |
| GLB/65/112/15 | Brown to J A Findley, Science Research Council | 30 January 1969 |
| GLB/65/112/14 | J A Findley, Science Research Council to Brown | 28 January 1969 |
| IM/005036 | Young, John Zachary | nd |
| IM/005037 | Young, John Zachary | nd |
| GLB/65/66/39 | Brown to J Z Young, Department of Anatomy, University College London | 14 April 1964 |
| PB/1/33/4/8 | President of the Royal Society | 1965 |
| CMB/281/35 | Notes on papers passed for publication in Philosophical Transactions | May 1961 |
| IM/GA/GRS/5211 | Young, John Zachary | nd |
| RR/34/134 | Referee's report by William Lawrence Bragg, on a paper 'The crystal structure of meteoric iron as determined by X-ray analysis' by John Zachary Young | [August 1926] |
| RR/42/88 | Referee's report by Hamilton Hartridge, on a paper 'The pupillary mechanism of the teleostean fish Uranoscopus scaber' by John Zachary Young | November 1930 |
| RR/61/38 | Referee's report by William Edward Garner, on a paper 'The ultrastructure of nerve axoplasm' by Richard S Bear, Francis O Schmitt and John Zachary Young | May 1937 |
| RR/72/12 | Referee's report by John Zachary Young, on a paper 'Some quantitative dental characteristics of the chimpanzee, gorilla and orang-outang' by E H Ashton and Solly Zuckerman | 1949 |
| RR/57/63 | Second referee's report by Henry Hallett Dale, on a paper 'The innervation and reactions to drugs of the viscera of teleostean fish' by John Zachary Young | [March 1936] |
| RR/65/287 | Referee's report by Carl Frederick Abel Pantin, on a paper 'Fused neurons and synaptic contacts in the giant nerve fibres of cephalopods' by John Zachary Young | November 1938 |
| RR/61/42 | Referee's report by William Edward Garner, on a paper 'The sheath components of the giant nerve fibres of the squid' by Richard S. Bear, Francis O. Schmitt and John Zachary Young | May 1937 |
| RR/61/41 | Referee's report by William Edward Garner, on a paper 'Investigation on the protein constituents of nerve axoplasm' by Richard S Bear, Francis O Schmitt and John Zachary Young | May 1937 |
| RR/61/40 | Referee's report by Carl Frederick Abel Pantin, on a paper 'Investigation on the protein constituents of nerve axoplasm' by Richard S Bear, Francis O Schmitt and John Zachary Young | May 1937 |
| RR/62/110 | Referee's report by James Gray, on a paper 'The structure of nerve fibres in cephalopods and crustacea' by John Zachary Young | [June 1936] |
| RR/68/231 | Letter from John Zachary Young, to Archibald Vivian Hill, regarding a paper 'The giant myelinated nerve fibres of the prawn' by William Holmes | 15 May 1942 |
| RR/68/243 | Referee's report by John Zachary Young, on a paper 'The autonomic nervous system of the earthworm' by Flight-lieutenant Norman Millott | [March 1940] |
| RR/68/242 | Letter from John Zachary Young, to Archibald Vivian Hill, regarding a paper 'The autonomic nervous system of the earthworm' by Flight-lieutenant Norman Millott | 20 March 1940 |
| RR/68/398 | Referee's report by John Zachary Young, on a paper 'The visceral nervous system of the earthworm II. Evidence of chemical transmission and the action of sympatheticomimetic and parasympatheticomimetic drugs on the tone of the alimentary canal' by Flight-lieutenant Norman Millott | [1943] |
| RR/72/4 | Referee's report by John Zachary Young, on a paper 'The influence of nerve fibres on Schwann cell migration investigated in tissue culture' by Michael Abercrombie, M L Johnson and G A Thomas | 1949 |
| RR/72/11 | Referee's report by John Zachary Young, on a paper 'The influence of geographic isolation on the skull of the green monkey (Cercopithecus aethiops sabaeus) I. A comparison between the teeth of the St Kitts and the African green monkey' by E H Ashton and Solly Zuckerman | 1949 |
| RR/72/10 | Referee's report by John Zachary Young, on a paper 'Some quantitative dental characters of fossil anthropoids' by E H Ashton and Solly Zuckerman | 1949 |
| RR/72/1 | Referee's report by John Zachary Young, on a paper 'The effects of antero-posterior reversal of lengths of the primitive streak in the chick' by Michael Abercrombie | 7 August 1949 |
| RR/72/191 | Letter from D C Martin, Assistant Secretary of the Royal Society, on a paper 'Reproduction in the basking shark, Cetorhinus maximus (gunner)' by Leonard Harrison Matthews to John Zachary Young | 12 July 1949 |
| RR/70/188 | Referee's report by John Zachary Young, on a paper 'The histophysiology of the alimentary canal of the earthworm Lumbricus terrestris Linnaeus - I. The process of extrusion from the intestinal glands, and other features of the intestinal epithelium' by Norman Millott | 1947 |
| IM/GA/WS/3906 | Young, John Zachary | nd |
| RR/61/43 | Referee's report by Carl Frederick Abel Pantin, on a paper 'The sheath components of the giant nerve fibres of the squid' by Richard S. Bear, Francis O. Schmitt and John Zachary Young | May 1937 |
| RR/72/192 | Referee's report by John Zachary Young, on a paper 'Reproduction in the basking shark, Cetorhinus maximus (gunner)' by Leonard Harrison Matthews | 1949 |
| RR/46/125 | Referee's report by John Herbert Parsons, on a paper 'Comparative studies on the physiology of the iris.-II. Uranoscopus and Lophius' by John Zachary Young | [November 1932] |
| EC/1945/21 | Young, John Zachary: certificate of election to the Royal Society | |
| PB/1/33/2 | Correspondence concerning the Copley Medal of the Royal Society | 1956 |
| RR/59/96 | Second referee's report by Edgar Douglas Adrian, 1st Baron Adrian of Cambridge, on a paper 'Electrical activity of the central nervous system of the frog' by R W Gerard and John Zachary Young | [December 1936] |
| RR/68/244 | Referee's report by John Zachary Young, on a paper 'The visceral nervous system of the earthworm: I. Nerves controlling the tone of the alimentary canal' by Flight-lieutenant Norman Millott | [1942] |
| RR/46/124 | Referee's report by John Herbert Parsons, on a paper 'Comparative studies on the physiology of the iris. -I. Selachians' by John Zachary Young | [November 1932] |
| RR/57/62 | Referee's report by Henry Hallett Dale, on a paper 'The innervation and reactions to drugs of the viscera of teleostean fish' by John Zachary Young | [December 1935] |
| RR/59/95 | Referee's report by Edgar Douglas Adrian, 1st Baron Adrian of Cambridge, on a paper 'Electrical activity of the central nervous system of the frog' by R W Gerard and John Zachary Young | 4 November 1936 |
| RR/65/288 | Referee's report by Edgar Douglas Adrian, on a paper 'Fused neurons and synaptic contacts in the giant nerve fibres of cephalopods' by John Zachary Young | November 1938 |
| RR/70/213 | Letter from John Zachary Young, on a paper 'The thickness of the myelin sheaths of normal and regenerating peripheral nerve fibres' by F K Sanders to D C Martin, Assistant Secretary of the Royal Society | 12 November 1947 |
| RR/70/214 | Letter from John Zachary Young, on a paper 'The thickness of the myelin sheaths of normal and regenerating peripheral nerve fibres' by F K Sanders to D C Martin, Assistant Secretary of the Royal Society | 5 December 1947 |
| RR/70/215 | Referee's report by John Zachary Young, on a paper 'The thickness of the myelin sheaths of normal and regenerating peripheral nerve fibres' by F K Sanders | 14 August 1947 |