| Reference number | Title | Date |
| IM/002006 | Head, Sir Henry | nd |
| EC/1899/08 | Head, Sir Henry: certificate of election to the Royal Society | |
| MM/16/108 | Letter from Charles S Sherrington, Ocford, to Henry Head | 23 September 1918 |
| RR/17/132 | Referee's report by Henry Head, on a paper 'The time taken in passing the synapse int he spinal cord of the frog' by Florence Buchanan | [April 1907] |
| NLB/19/373 | Copy letter from Theodore E James, to Messrs Harrison & Sons | 4 September 1899 |
| NLB/20/88 | Copy letter from Theodore E James, to Messrs Harrison & Sons | 29 January 1900 |
| NLB/54/68 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Henry] Head, Vice President of the Royal Society | 1 February 1917 |
| NLB/35/451 | Copy letter from Robert William Frederick Harrison, to Dr Henry Head, Fellow of the Royal Society | 3 June 1907 |
| NLB/62/917 | Copy letter from [Francis Alexander Towle, Assistant Secretary of the Royal Society]; to the Editor of 'The Morning Post' | 7 June 1922 |
| NLB/36/542 | Copy letter from Robert William Frederick Harrison, to Dr Henry Head, Fellow of the Royal Society | 12 November 1907 |
| MC/23/211 | Letter from Henry Head, 4 Montagu Square, Hyde Park, to Mr [Robert] Harrison, [Royal Society] | 6 November 1908 |
| NLB/39/10 | Copy letter from Robert William Frederick Harrison to Dr Henry Head, Fellow of the Royal Society | 13 November 1908 |
| NLB/38/769 | Copy letter from Robert William Frederick Harrison, to Dr Henry Head, Fellow of the Royal Society | 3 November 1908 |
| NLB/51/156 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Dr Henry Head FRS | 22 December 1914 |
| MC/30/86 | Letter from Henry Head, 4 Montagu Square, Hyde Park, to Mr [Robert] Harrison, [Royal Society] | 8 December 1915 |
| NLB/54/856 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Henry] Head, Vice President of the Royal Society | 22 October 1917 |
| RR/17/141 | Referee's report by Henry Head, on a paper 'Cases of colour-blindness, No. VI to No. XVIII, together with eleven selected examples of normal colour sensations' by George James Burch | [June 1907] |
| NLB/54/702 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Henry Head, Vice President of the Royal Society | 13 August 1917 |
| NLB/54/133 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Henry] Head, Vice President of the Royal Society | 14 February 1917 |
| NLB/54/125 | Copy letter from [Robert William Frederick Harrison, Assistant Secretary of the Royal Society]; to the Honorary Secretary of the Committee for Promoting an Intellectual Entente among the Allied and Friendly Countries | 13 February 1917 |
| NLB/54/399 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Henry Head, Vice President of the Royal Society | 2 May 1917 |
| NLB/54/588 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Henry Head, Vice President of the Royal Society | 26 June 1917 |
| NLB/54/657 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Henry Head, Vice President of the Royal Society | 17 July 1917 |
| NLB/54/651 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. [Henry] Head, Vice President of the Royal Society | 13 July 1917 |
| RR/27/60 | Referee's report by Henry Head, on a paper 'The influence of various conditions on the time relations of tendon reflexes in the human subject' by Frederick Golla and Joseph Hettwer | June 1922 |
| NLB/61/124 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. Henry Head, FRS | 18 May 1921 |
| NLB/60/327 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [Henry] Head, FRS | 20 January 1921 |
| RR/31/50 | Referee's report by Henry Head, on a paper 'The problem of treatment of spastic paralysis. An experimental and clinical study' by [Norman] D Royle | [February 1924] |
| NLB/58/496 | Copy letter from William Bate Hardy, Secretary of the Royal Society; to Dr. [Henry] Head, FRS | 13 May 1920 |
| NLB/60/525 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. Henry Head, FRS | 18 February 1921 |
| NLB/61/288 | Copy letter from Charles Scott Sherrington, President of the Royal Society; to Dr. Henry Head, FRS | 16 June 1921 |
| NLB/60/910 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. Henry Head, FRS | 26 April 1921 |
| NLB/61/430 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. [Henry] Head, FRS | 7 July 1921 |
| RR/25/7 | Referee's report by Henry Head, on a paper 'Brevity, frequency of rhythm, and amount of reflex nervous discharge, as indicated by reflex contraction' by N B Dreyer and Charles Scott Sherrington | 12 June 1918 |
| NLB/63/32 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. Henry Head, FRS | 15 June 1922 |
| NLB/63/65 | Copy letter from William Bate Hardy, Secretary of the Royal Society and FRS; to Dr. Henry Head, FRS | 20 June 1922 |
| IM/002005 | Head, Sir Henry | 1922 |
| NLB/65/588 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Henry] Head, FRS | 23 November 1923 |
| NLB/67/621 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr Henry Head, FRS | 2 February 1925 |
| NLB/66/370 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. Henry Head, FRS | 28 April 1924 |
| RR/30/84 | Referee's report by Henry Head, on a paper 'The postural influence of the sympathetic nervous system' by John I Hunter | 31 January 1924 |
| RR/16/311 | Referee's report by Henry Head, on a paper 'An investigation into the structure of the lumbo-sacral-coccygeal cord of the macaque monkey (macacus sinicus)' by Mabel Purefoy Fitzgerald | November 1905 |
| MC/22/109 | Letter from Henry Head, Editor of Brain, 4 Montagu Square, London, [Robert William Frederick] Harrison | 9 November 1907 |
| NLB/65/861 | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir John Rose Bradford, KCMG, FRS | 18 January 1924 |
| MDA/C/4/2 | Letters on nominations to deliver the Croonian Lecture | 1921-1925 |
| NLB/36/297 | Copy letter from Robert William Frederick Harrison, to Dr Henry Head, Fellow of the Royal Society | 8 October 1907 |
| NLB/54 | New Letter Book volume 54, copy letters sent from Royal Society administration | 10 January 1917-2 November 1917 |
| MC/23/364 | Letter from [Sir Dighton] Probyn, Keeper of His Majesty's Privy Purse, Buckingham Palace, to Professor [Joseph] Larmor, FRS, [Royal Society] | 31 October 1908 |
| NLB/47/651 | Copy letter from Robert William Frederick Harrison to Dr Henry Head FRS | 7 March 1913 |
| MC/28/133 | Letter from Henry Head, 4 Montagu Square, Hyde Park, to Mr [Robert] Harrison, [Royal Society] | 6 March 1913 |
| NLB/52/416 | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Dr. Henry Head, FRS | 2 December 1915 |
| MC/22 | Volume 22 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1907 |