Writings of Blessed Pope Pius IX
- Amantissimi Redemptoris - On Priests and the Care of Souls, by Pope Pius IX, 3 May 1858
- Apostolicae Nostrae Caritatis - Urging Prayers For Peace, by Pope Pius IX, 1 August 1854
- Beneficia Dei - On The Twenty-Fifth Anniversary of His Pontificate, by Pope Pius IX, 4 June 1871
- Cum Nuper - On Care for Clerics, by Pope Pius IX, 20 January 1858
- Cum Sancta Mater Ecclesia - Pleading for Public Prayer, by Pope Pius IX, 27 April 1859
- Etsi Multa - On the Church in Italy, Germany, and Switzerland, by Pope Pius IX, 21 November 1873
- Exultavit Cor Nostrum - On the Effects of the Jubilee, by Pope Pius IX, 21 November 1851
- Graves ac Diuturnae - On the Church in Switzerland, by Pope Pius IX, 23 March 1875
- Gravibus Ecclesiae - Proclaiming a Jubilee for 1875, by Pope Pius IX, 24 December 1874
- Incredibili - On Persecution in New Granada, by Pope Pius IX, 17 September 1863
- Ineffabilis Deus - The Immaculate Conception, by Pope Pius IX, 8 December 1854
- Levate - On the Afflictions of the Church, by Pope Pius IX, 21 October 1867
- Maximae Quidem - On the Church in Bavaria, by Pope Pius IX, 18 August 1864
- Meridionali Americae - On the Seminary for Native Clergy, by Pope Pius IX, 30 September 1865
- Neminem Vestrum - On The Persecution Of Armenians, by Pope Pius IX, 2 February 1854
- Nemo Certe Ignorat - On Discipline for Clergy, by Pope Pius IX, 25 March 1852
- Nostis et Nobiscum - On The Church In The Pontifical States, by Pope Pius IX, 8 December 1849
- Nullis Certe Verbis - On the Need for Civil Sovereignty, by Pope Pius IX, 19 January 1860
- Omnem Sollicitudinem - On The Greek-Ruthenian Rite, Pope Pius IX, 13 May 1874
- Optime Noscitis - On Episcopal Meetings, by Pope Pius IX, 5 November 1855
- Optime Noscitis - On The Proposed Catholic University Of Ireland, by Pope Pius IX, 20 March 1854
- Praedecessores Nostros - On Aid for Ireland, by Pope Pius IX, 25 March 1847
- Quae in Patriarchatu - On the Church in Chaldae, by Pope Pius IX, 16 November 1872
- Quanta Cura - Condemning Current Errors, by Pope Pius IX, 8 December 1864
- Quanto Conficiamur Moerore - On Promotion of False Doctrines, by Pope Pius IX, 10 August 1863
- Quartus Supra - On the Church in Armenia, by Pope Pius IX, 6 January 1873
- Qui Nuper - On Pontifical States, by Pope Pius IX, 18 June 1859
- Qui Pluribus - On Faith And Religion, by Pope Pius IX, 9 November 1846
- Quod Nunquam - On the Church in Prussia, by Pope Pius IX, 5 February 1875
- Respicientes - Protesting the Taking of the Pontifical States, by Pope Pius IX, 1 November 1870
- Saepe Venerabiles Fratres - On Thanksgiving For Twenty-Five Years Of Pontificate, by Pope Pius IX, 5 August 1871
- Singulari Quidem - On the Church in Austria, by Pope Pius IX, 17 March 1856
- Syllabus of Errors, by Pope Blessed Pius IX, 8 December 1864
- Ubi Nos - On Pontifical States, by Pope Pius IX, 15 May 1871
- Ubi Primum - On Discipline for Religious, by Pope Pius IX, 17 June 1847
- Ubi Primum - On The Immaculate Conception, by Pope Pius IX, 2 February 1849
- Vix Dum a Nobis - On the Church in Austria, by Pope Pius IX, 7 March 1874