| Reference number | Title | Date |
| IM/GA/AR/7266 | Haddow, Sir Alexander | nd |
| GLB/18/17 | Paper by G P Wells, Harry Melville and Alexander Haddow on the Archives of the Royal Society Club | c June 1962 |
| EC/1958/14 | Haddow, Sir Alexander: certificate of election to the Royal Society | |
| PB/1/33/3/3 | Companion of Honour | 1965 |
| IM/GA/WRS/8652 | Haddow, Sir Alexander | nd |
| IM/Meitner Graf/001822 | Haddow, Sir Alexander | nd |
| RR/60/10 | Referee's report by Otto Rosenheim, on a paper 'The influence of certain carcinogenic and other hydrocarbons on body growth in the rat' by Alexander Haddow and C M Scott | December 1936 |
| RR/60/13 | Referee's report by Otto Rosenheim, on a paper 'The influence of various polycyclic hydrocarbons on the growth rate of transplantable tumours' by Alexander Haddow and A M Robinson | December 1936 |
| RR/60/11 | Referee's report by James Alexander Murray, on a paper 'The influence of certain carcinogenic and other hydrocarbons on body growth in the rat' by Alexander Haddow and C M Scott | 28 December 1936 |
| RR/70/132 | Letter from James Wilfred Cook, on a paper 'The growth-inhibitory and carcinogenic properties of 4-aminostilbene and derivatives' by Alexander Haddow, R J C Harris, George Armand Robert Kon and E M F Roe to the Assistant Secretary of the Royal Society | 16 February 1948 |
| RR/70/131 | Referee's report by Edward Charles Dodds, on a paper 'The growth-inhibitory and carcinogenic properties of 4-aminostilbene and derivatives' by Alexander Haddow, R J C Harris, George Armand Robert Kon and E M F Roe | 1947 |
| RR/60/14 | Referee's report by James Alexander Murray, on a paper 'The influence of various polycyclic hydrocarbons on the growth rate of transplantable tumours' by Alexander Haddow and A M Robinson | 28 December 1936 |
| RR/60/9 | Referee's report by Frederick William Twort, on a paper 'The influence of certain carcinogenic and other hydrocarbons on body growth in the rat' by Alexander Haddow and C M Scott | 11 December 1936 |
| RR/70/129 | Letter from Edward Charles Dodds, on a paper 'The growth-inhibitory and carcinogenic properties of 4-aminostilbene and derivatives' by Alexander Haddow, R J C Harris, George Armand Robert Kon and E M F Roe to the Assistant Secretary of the Royal Society | 18 February 1948 |
| RR/60/12 | Referee's report by Frederick William Twort, on a paper 'The influence of various polycyclic hydrocarbons on the growth rate of transplantable tumours' by Alexander Haddow and A M Robinson | 11 December 1936 |
| RR/68/6 | Referee's report by Joseph Needham, on a paper 'The inhibition of growth by chemical compounds' by G M Badger, L A Elson, Alexander Haddow, C L Hewett and A M Robinson | [1941] |
| RR/70/130 | Letter from Edward Charles Dodds, on a paper 'The growth-inhibitory and carcinogenic properties of 4-aminostilbene and derivatives' by Alexander Haddow, R J C Harris, George Armand Robert Kon and E M F Roe to the Assistant Secretary of the Royal Society | 9 October 1947 |
| RR/70/133 | Referee's report by James Wilfred Cook, on a paper 'The growth-inhibitory and carcinogenic properties of 4-aminostilbene and derivatives' by Alexander Haddow, R J C Harris, George Armand Robert Kon and E M F Roe | 18 November 1947 |