| Reference Number | Title | Date |
| RCPI/2/3/2/13/153 | Letter to Dr Sullivan, Upper Woburn Place, London | 20 March 1916 |
| RCPI/2/3/2/13/154 | Letter to Dr M H O' Sullivan, Bantry, Cork | 27 January 1916 |
| RCPI/2/3/1/58/Tau58 | Application for change of name of Maurice Hennigan O'Sullivan | 26 January - 7 March 1916 |
| RCPI/2/3/1/58/Tau58/2 | Letter from Maurice Sullivan, Hotel Gwalia, Upper Woburn Place, London W 6 | 1 March 1916 |
| RCPI/2/3/1/58/Tau58/3 | Letter from Maurice Sullivan, Hotel Gwalia, Upper Woburn Place, London W 6 | 7 March 1916 |
| RCPI/2/3/1/58/Tau58/4 | Statutory Declaration by Maurice Sullivan | 7 March 1916 |