| Reference number | Title | Date |
| IM/000329 | Benham, William Blaxland | nd |
| MDA/A/4/150 | Letter from Henry Dale, President of the Royal Society, to Sir William Benham, FRS, Dunedin, New Zealand | 1 July 1942 |
| MDA/A/4/151 | Letter from W B Benham, FRS, University of Otago, Dunedin, New Zealand, to Henry Dale | 11 March 1942 |
| IM/Maull/000328 | Benham, William Blaxland | nd |
| NLB/35/800 | Copy letter from Robert William Frederick Harrison, to William Blaxland Benham, [Fellow of the Royal Society] | 18 July 1907 |
| NLB/58/590 | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to Professor [William Blaxland] Benham, FRS | 27 May 1920 |
| NLB/57/463 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor WB [Sir William Blaxland] Benham, FRS | 11 November 1919 |
| NLB/57/462 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to the Chancellor, University of Otago, Dunedin, New Zealand | 11 November 1919 |
| NLB/57/464 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to to Professor DO [Sir David Orme] Masson, FRS | 11 November 1919 |
| NLB/63/58 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society and FRS; to Dr. Vernon Kellogg, Secretary, National Research Council, 1701, Massachusetts Avenue, Washington D.C., USA | 16 June 1922 |
| NLB/65/180 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Professor [William Blaxland] Benham, FRS | 10 September 1923 |
| CD/5/9 | Copy letter from Professor [William Blaxland] Benham, to James Hopwood Jeans, Secretary of the Royal Society | 5 August 1922 |
| CD/5/4 | Copy letter from James Hopwood Jeans, Secretary of the Royal Society, to Professor [Wilfred Eade] Agar, Professor [William Blaxland] Benham, Sir [Tannatt William] Edgeworth David, and Sir [Walter] Baldwin Spencer | 16 June 1922 |
| EC/1907/03 | Benham, Sir William Blaxland: certificate of election to the Royal Society | |
| NLB/57 | New Letter Book volume 57, copy letters sent from Royal Society administration | 27 June 1919-27 February 1920 |