| RefNo | Title | Date |
| EC/1929/10 | Lang, William Dickson: certificate of election to the Royal Society | |
| RR/24/58 | Referee's report by Aubrey Strahan, on a paper 'The pelmatoporinae, an essay on the evolution of a group of cretaceous polyzoa' by William Dickson Lang | [December 1917] |
| RR/24/57 | Referee's report by Henry Woods, on a paper 'The pelmatoporinae, an essay on the evolution of a group of cretaceous polyzoa' by William Dickson Lang | [November 1917] |
| RR/48/14 | Referee's report by William Dickson Lang, on a paper 'The lantern and girdle of some recent and fossil Echinoidea' by Herbert Leader Hawkins | [January 1934] |
| RR/49/72 | Third referee's report by William Dickson Lang, on a paper 'The extinct of rhinoceroses of Baluchistan' by Clive Forster-Cooper | 19 February 1934 |
| NLB/72/194 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [William Dickson] Lang, FRS | 15 May 1929 |
| RR/58/68 | Referee's report by William Dickson Lang, on a paper 'Two new Echinoidea, Aulechinus and Ectinechinus, and an adult plated holothurian, Eothuria, from the Upper Ordovician of Girvan, Scotland' by Ernest William MacBride and William Kingdon Spencer | 31 March 1937 |
| RR/49/71 | Referee's report by William Dickson Lang, on a paper 'The extinct of rhinoceroses of Baluchistan' by Clive Forster-Cooper | [October 1933] |
| RR/49/70 | Second referee's report by William Dickson Lang, on a paper 'The extinct of rhinoceroses of Baluchistan' by Clive Forster-Cooper | 21 November 1933 |
| RR/56/65 | Referee's report by William Dickson Lang, on a paper 'On the tooth-replacement in theriodont reptiles' by Francis Rex Parrington | 6 September 1935 |
| RR/64/113 | Referee's report by William Dickson Lang, on a paper 'Two new Echinoidea, Aulechinus and Ectinechinus, and an adult plated holothurian, Eothuria, from the Upper Ordovician of Girvan, Scotland' by Ernest William MacBride and William Kingdon Spencer | 10 Septmber 1937 |
| RR/47/13 | Referee's report by William Dickson Lang, on a paper 'Fossils of the late pre-cambrian (newer proterogoic) Adelaide series, South Australia' by Tannatt William Edgeworth David and Robin John Tillyard | 22 June 1932 |