| Reference Number | Title | Date |
| RCPI/5/4/6/1885 | Fellowship Nominations 1885 | 1885 |
| AJH/4/1 | Letter of Congratulations | 5 July 1913 |
| VM/1/2/H/35 | Andrew J Horne | 1908 |
| AJH | Sir Andrew John Horne | 1856-1914 |
| AJH/4/2 | Gala Banquet | 4 December 1913 |
| AJH/7 | Photographs | Early twenty-first century |
| AJH/2/1 | Phagocytes Photograph Album | 1891-1914 |
| AJH/2/4 | Receipts | 1907-1908 |
| AJH/1 | Medical Certificates | 1878-1895 |
| AJH/2/3 | Phagocyte Club Photograph | [1907] |
| AJH/4 | Sir Andrew Horne's Knighthood | 1913 |
| AJH/6 | Catalogue of Music | 1856 |
| AJH/4/4 | Photographs | Early twenty-first century |
| AJH/4/3 | Court Dress of Sir Andrew John Horne | 1913 |
| AJH/5 | [New Year] card from Lady Aberdeen | 1923 |
| AJH/2 | The Phagocytes Club | 1891-1914 |
| AJH/3 | President's Dinners | February - April 1909 |
| LMH/7 | Interview with Patricia Horne | December 2012 - February 2013 |
| AJH/2/2 | Snuff Box | 1895 |
| VM/1/1/4 | Roll of Presidents Vol II - 1801-1914 | 1915 |
| RCPI/2/3/2/13/167 | Letter to the Medical Commissioner, Local Government Board, Dublin | 3 June 1916 |
| RCPI/2/3/2/13/181 | Letter to the Secretary, Irish Medical Association | 10 July 1916 |
| RCPI/2/3/1/59/Upsilon15 | Fellowship nomination papers of Robert Ambrose MacLaverty | 6 - 9 April 1917 |
| BMS/56 | Medical photograph scrapbook | [1901-1916] |
| RE/1/4/3 | Photographs of Angela Russell at NSPCC meeting | 1945 |
| AJH/9 | Dress Sword of Andrew John Horne Junior | 1900-1949 |