| Reference number | Title | Date |
| EC/1940/07 | Beer, Sir Gavin Rylands De: certificate of election to the Royal Society | |
| IM/001104 | De Beer, Sir Gavin Rylands | circa 1950 |
| MDA/A/16/70 | Copy letter from Sir Gavin Rylands De Beer to David Christie Martin | 28 May 1956 |
| MM/22/1 | Letter from Charles Scott Sherrington to Gavin de Beer | 9 December 1946 |
| RR/37/13 | Referee's report by James Thomas Wilson, on a paper 'The development of the skull of the shrew' by Gavin Rylands De Beer | December 1928 |
| RR/37/14 | Referee's report by Edward Fawcett, on a paper 'The development of the skull of the shrew' by Gavin Rylands De Beer | January 1929 |
| RR/52/36 | Referee's report by Edward Fawcett, on a paper 'On the skull of holocephali' by Gavin Rylands De Beer and J A Moy-Thomas | July 1934 |
| RR/69/19 | Referee's report by Herbet Graham Cannon, on a paper 'The differentiation of neural crest cells into visceral cartilages and odontoblasts in Amblystoma, and a re-examination of the germ-layer theory' by Gavin Rylands De Beer | 1946 |
| RR/52/37 | Referee's report by Richard Higgins Burne, on a paper 'On the skull of holocephali' by Gavin Rylands De Beer and J A Moy-Thomas | June 1934 |
| RR/70/202 | Referee's report by Gavin Rylands De Beer, on a paper 'The structure of certain Jurassic holostean fishes, with special reference to their neurocrania' by Dorothy H Rayner | 1947 |
| RR/72/102 | Referee's report by Gavin Rylands De Beer, on a paper 'The skull of the foetal narwhal, Monodon monoceros L' by Nellie B Eales | 9 February 1950 |
| MM/22/2 | Letter from Solly Zuckerman to Gavin de Beer | 24 July 1947 |
| RR/49/15 | Referee's report by James Peter Hill, on a paper 'The segmentation and chondrification of the skull of the duck' by Gavin Rylands De Beer and Ernest James William Barrington | [November 1933] |
| RR/49/14 | Referee's report by John Graham Kerr, on a paper 'The segmentation and chondrification of the skull of the duck' by Gavin Rylands De Beer and Ernest James William Barrington | [October 1933] |
| RR/70/166 | Referee's report by Gavin Rylands de Beer, on a paper 'Studies on the Onychophora VII. The early embryonic stages of Peripatopsis, and some general considerations concerning the morphology and phylogeny of the arthropoda' by Sidnie Milana Manton | 15 December 1947 |
| RR/41/20 | Referee's report by Francis Joseph Cole, on a paper 'The early development of the skull of the rabbit' by Gavin Rylands De Beer and J H Woodger | February 1930 |
| RR/41/19 | Referee's report by James Peter Hill, on a paper 'The early development of the skull of the rabbit' by Gavin Rylands De Beer and J H Woodger | February 1930 |
| RR/70/47 | Letter from Solly Zuckerman, on a paper 'Mitotic activity in the adult male mouse, Mus musculus L. The diurnal cycles and their relation to waking and sleeping' by W S Bullough to Gavin Rylands de Beer | 22 November 1947 |