| A rediscovered letter of Sylvester O'Halloran to Dr de Salis | Lyons, Claire E. | Article in Journal | | 2007 |
| Fostering an Irish identity through art: a letter from Sylvester O'Halloran (1728-1807) to James Barry (1741-1806) in May 1791 | Lyons, Claire E. | Article in Journal | | 2010 |
| Playing Catholic against Protestant : British intervention in Catholic relief in Ireland, 1778 | Lyons, Claire | Article in Journal | | 2013 |
| Sylvester O’Halloran’s General History (1778): Irish Historiography and the Late Eighteenth-Century British Empire | Lyons, Claire E. | Thesis | | 2011 |
| Three unpublished letters of Sylvester O'Halloran | O'Halloran, Sylvester, 1728-1807 | Article in Journal | | 2009 |