| Ignazio Persico's 'Relazione sulla condizione religiosa e civile d'Irlanda' (1887) | Belletti, Alberto | Article in Journal | | 2019 |
| Letters and papers of Archbishop Ignazio Persico, Papal Commissary to Ireland 1887-8 : Part 3 | O'Callaghan, Edward P. | Article in Journal | | 1996 |
| Letters and papers of Archbishop Ignazio Persico, papal commissary to Ireland 1887-8. Pt. 2 | O'Callaghan, Edward P. | Article in Journal | | 1994 |
| Letters and papers of archbishop Ignazio Persico, papal commissary to Ireland, 1887-1888 | O'Callaghan, Edward P. | Article in Journal | | 1993 |