| Reference Number | Title | Date |
| RCPI/2/3/2/13/65 | Letter to Prof W H Thompson MD, Dublin | 2 October 1914 |
| RCPI/2/3/2/13/72 | Letter to Prof W H Thompson MD, Dublin | 20 October 1914 |
| RCPI/2/3/2/13/152 | Letter to the Registrar of Sir Patrick Dun's Hospital | 20 March 1916 |
| RCPI/2/3/2/13/172 | Letter to Prof W H Thompson | 3 June 1916 |
| RCPI/2/3/2/13/218 | Letter to Prof. W. H. Thompson, Cronidene, Croydon | 5 March 1917 |
| RCPI/2/3/1/58/Tau4 | Fellowship application of W H Thompson | 17 - 26 October 1914 |
| RCPI/2/3/1/58/Tau4/1 | Letter from W H Thompson, 14 Hatch Street, Dublin | 17 October 1914 |
| RCPI/2/3/1/58/Tau4/2 | Fellowship nomination form for William Henry Thompson | 3 July 1914 |
| RCPI/2/3/1/58/Tau4/3 | Letter from W H Thompson, 14 Hatch Street, Dublin | 20 October 1914 |
| RCPI/2/3/1/58/Tau4/4 | Letter from W H Thompson, 14 Hatch Street, Dublin | 26 October 1914 |
| RCPI/2/3/1/58/Tau54 | Letter from W H Thompson, School of Physiology, Trinity College Dublin | 8 January 1916 |
| RCPI/2/3/1/58/Tau69 | Letter from W H Thompson, School of Physic, Trinity College Dublin | 1 April 1916 |
| RCPI/2/3/1/58/Tau74 | Letter from W H Thompson, School of Physiology Trinity College | 30 May 1916 |
| RCPI/2/3/1/59/Upsilon10 | Letter from W H Thompson, Wellesley Rd, Croydon, England | 8 February 1917 |
| RCPI/2/3/1/59/Upsilon69 | Letter from Prof. W. H. Thompson, Ministry of Food, | 6 February 1918 |
| RCPI/2/3/1/59/Upsilon96 | Letter from Isabel Thompson, 9 Wellesley Road, Croydon, Surrey | 24 October 1918 |