Ven. Pope Pius IX (June 16, 1846 – February 7, 1878)
- Amantissimi Redemptoris (On Priests and the Care of Souls) - May 3, 1858 Ereader Files: English [ MOBI- EPUB- ]
- Amantissimus (On the Care of the Churches) - April 8, 1862 Ereader Files: English [ MOBI- EPUB- ]
- Apostolicae Nostrae Caritatis (Urging Prayers of Peace) - August 1, 1854 Ereader Files: English [ MOBI- EPUB- ]
- Beneficia Dei (On the 25th Anniversary of His Pontificate) - June 4, 1871 Ereader Files: English [ MOBI- EPUB- ]
- Cum Nuper (On Care for Clerics) - January 20, 1858 Ereader Files: English [ MOBI- EPUB- ]
- Cum Sancta Mater Ecclesia (Pleading for Public Prayer) - April 27, 1858 Ereader Files: English [ MOBI- EPUB- ]
- Dives In Misericordia Deus ((pdf)(Proclaiming St. Francis de Sales a "Doctor of the Church)) - November 16, 1877 Ereader Files: Arabic [ MOBI- EPUB- ]
- Etsi Multa (On the Church in Italy, Germany and Switzerland) - November 21, 1873 Ereader Files: English [ MOBI- EPUB- ]
- Exultavit Cor Nostrum (On the Effects of the Jubilee) - November 21, 1851 Ereader Files: English [ MOBI- EPUB- ]
- Graves Ac Diuturnae (On the Church in Switzerland) - March 23, 1875 Ereader Files: English [ MOBI- EPUB- ]
- Gravibus Ecclesiae (Proclaiming A Jubilee) - December 24, 1874 Ereader Files: English [ MOBI- EPUB- ]
- Incredibili (On the Persecution in New Granada) - September 17, 1863 Ereader Files: English [ MOBI- EPUB- ]
- Ineffabilis Deus (The Immaculate Conception) - December 8, 1854 Ereader Files: English [ MOBI- EPUB- ]
- Inter Multiplices (Pleading for Unity of Spirit) - March 21, 1853 Ereader Files: English [ MOBI- EPUB- ]
- Levate (On the Affiliations of Church) - September 27, 1867 Ereader Files: English [ MOBI- EPUB- ]
- Maximae Quidem (On the Church in Bavaria) - August 18, 1864 Ereader Files: English [ MOBI- EPUB- ]
- Meridionali Americae (On the Seminary for the Native Clergy) - September 30, 1865 Ereader Files: English [ MOBI- EPUB- ]
- Neminem Vestrum (On the Persecution of Armenians) - February 2, 1854 Ereader Files: English [ MOBI- EPUB- ]
- Nemo Certe Ignorat (On Discipline for Clergy) - March 25, 1852 Ereader Files: English [ MOBI- EPUB- ]
- Nostis Et Nobiscum (On the Church in the Pontifical States) - December 8, 1849 Ereader Files: English [ MOBI- EPUB- ]
- Nullis Certe Verbis (On the Need for Civil Sovereignty) - January 19, 1860 Ereader Files: English [ MOBI- EPUB- ]
- Omnem Sollicitudinem (On the Greek-Ruthenian Rite) - May 13, 1874 Ereader Files: English [ MOBI- EPUB- ]
- Optime Noscitis (On the Proposed Catholic University of Ireland) - March 20, 1854 Ereader Files: English [ MOBI- EPUB- ]
- Optime Noscitis (On Episcopal Meetings) - November 5, 1855 Ereader Files: English [ MOBI- EPUB- ]
- Praedecessores Nostros (On Aid for Ireland) - March 25, 1847 Ereader Files: English [ MOBI- EPUB- ]
- Probe Noscitis Venerabiles (On the Discipline for Clergy) - May 17, 1852 Ereader Files: English [ MOBI- EPUB- ]
- Quae In Patriarchatu (On the Church in Chaldea) - November 16, 1872 Ereader Files: Arabic [ MOBI- EPUB- ]
- Quanta Cura (Condemning Current Errors) - December 8, 1864 Ereader Files: English [ MOBI- EPUB- ]
- Quanto Conficiamur Moerore (On Promotion of False Doctrines) - August 10, 1863 Ereader Files: English [ MOBI- EPUB- ]
- Quartus Supra (On the Church in Armenia) - January 6, 1873 Ereader Files: English [ MOBI- EPUB- ]
- Qui Nuper (On Pontifical States) - June 18, 1859 Ereader Files: English [ MOBI- EPUB- ]
- Qui Pluribus (On Faith and Religion) - November 9, 1846 Ereader Files: English [ MOBI- EPUB- ]
- Quod Nunquam (On the Church in Prussia) - February 8, 1875 Ereader Files: English [ MOBI- EPUB- ]
- Respicientes (Protesting the Taking of the Pontifical States) - November 1, 1870 Ereader Files: English [ MOBI- EPUB- ]
- Saepe Venerabiles Fratres (Thanksgiving for 25 Years of Pontificate) - August 5, 1871 Ereader Files: English [ MOBI- EPUB- ]
- Singulari Quidem (On the Church in Austria) - March 17, 1856 Ereader Files: English [ MOBI- EPUB- ]
- The Syllabus Of Errors () - June 9, 1864 Ereader Files: English [ MOBI- EPUB- ]
- Ubi Nos (On Pontifical States) - May 15, 1871 Ereader Files: English [ MOBI- EPUB- ]
- Ubi Primum (On Discipline for Religious) - June 17, 1847 Ereader Files: English [ MOBI- EPUB- ]
- Ubi Primum (On the Immaculate Conception) - February 2, 1849 Ereader Files: English [ MOBI- EPUB- ]
- Vix Dum A Nobis (On the Church in Austria) - March 7, 1874 Ereader Files: Arabic [ MOBI- EPUB- ]