| A memoir of Peter Begley OFM on observance in the Irish province (1928-34) | Fennessy, Ignatius, OFM | Article in Journal | | 2010 |
| Andreas Steinhuber's 'Votum' for the Holy Office, Rome, concerning the Irish Boycotting and the Plan of Campaign (with translation) | Belletti, Alberto | Article in Journal | | 2021 |
| Confronting modernity : Pope Leo XIII, Rerum novarum, and the Catholic Church in Ireland and Poland, 1878-1914 | Luminiello, Rose | Thesis | | |
| Ignazio Persico's 'Relazione sulla condizione religiosa e civile d'Irlanda' (1887) | Belletti, Alberto | Article in Journal | | 2019 |
| On Her Majesty's Secret Service : Gladstone, Ireland and Pope Leo XIII, 1881-1885/86 | Urbach, Karina | Article in Book | | 2005 |
| The annual collection for His Holiness Pope Leo XIII in the diocese of Dublin | Anonymous | Article in Journal | | 2000 |
| The Lord and Labour: Irish clerical attitudes to the workers' question, 1903-1920 | Maguire, Paul | Article in Journal | | 2011 |