| Reference number | Title | Date |
| EC/1926/10 | Butler, Sir Edwin John: certificate of election to the Royal Society | |
| RR/40/112 | Referee's report by Edwin John Butler, on a paper 'Studies of the growth of moulds. I' by R G Tomkins | 21 July 1929 |
| RR/40/103 | Referee's report by Edwin John Butler, on a paper 'The morphology and cytology of Bacterium malvacearum, E. F. S' by R H Stoughton | October 1929 |
| RR/37/60 | Referee's report by Edwin John Butler, on a paper 'Experiments on the physiology and genetics of the smut fungi. Cultural characters. Part I.—Their permanence and segregation' by Sydney Dickinson | July 1928 |
| RR/39/110 | Referee's report by Edwin John Butler, on a paper 'Crinkle “A,” an infectious disease of the potato' by Redcliffe Nathan Salaman | 3 December 1929 |
| RR/35/90 | Referee's report by Edwin John Butler, on a paper 'A quantitative study of the course of fungal invasion of the apple fruit and its bearing on the nature of disease resistance.—Part I. A statistical method of studying fungal invasion' by F G Gregory and A S Horne | May 1927 |
| RR/47/135 | Referee's report by Edwin John Butler, on a paper 'The action of certain volatile substances and gases on the growth of mould fungi' by R G Tomkins | 16 May 1932 |
| RR/52/35 | Referee's report by Edwin John Butler, on a paper 'Studies on a virus causing foliar necrosis of the potato' by Frederick Charles Bawden | September 1934 |
| RR/58/50 | Referee's reprot by Edwin John Butler, on a paper 'Observations on the parasitism and control of Armillaria mellea' by R Leach | October 1936 |
| RR/53/125 | Referee's report by Edwin John Butler, on a paper 'On the numerical distribution of micro-organisms in the atmosphere' by A S Horne | 20 November 1934 |
| NLB/64/171 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Under Secretary of State; Colonial Office, S.W.l. | 16 February 1923 |
| RR/39/111 | Referee's report by Edwin John Butler, on a paper 'Para-crinkle: a potato disease of the virus group' by Redcliffe Nathan Salaman and Richard H Le Pelley | 30 December 1929 |
| NLB/69/408 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [Edwin John] Butler C.I.E., Baron's Court, W.14 | 29 March 1926 |
| NLB/69/427 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to L.W Sharp Esq., Cornell University, Ithaca, [New York] | 13 April 1926 |
| RR/49/157 | Referee's report by Edwin John Butler, on a paper 'Studies in the genera cytosporina, Phomopsis, and Diaporthe. VI. - On the conversion of one strain of Diaporthe perniciosa into another' by S N Das Gutpa | 8 August 1933 |
| MDA/C/6/4 | Papers relating to an award from the Darwin Research Fund to Sir Arthur Hill, Royal Botanic Gardens Kew | 1939-1940 |
| RR/35/92 | Referee's report by Edwin John Butler, on a paper 'A quantitative study of the course of fungal invasion of the apple fruit, and its bearing on the nature of disease resistance.—Part II. The application of the statistical method to certain specific problems' by F G Gregory and A S Horne | May 1927 |
| RR/44/60 | Referee's report by Edwin John Butler, on a paper 'The analysis and synthesis of some disease of the mosaic type. The problem of carriers and auto-infection in the potato' by Redcliffe Nathan Salaman | December 1931 |
| RR/44/72 | Referee's report by Edwin John Butler, on a paper 'On the composite nature of certain potato virus diseases of the mosaic group as revealed by the use of plant indicators and selective methods of transmission' by Kenneth Manley Smith | September 1931 |