Blessed Pius XI (1846-1878)

Amantissimi Redemptoris - On Priests and the Care of Souls (May 3, 1858)

Amantissimus - On the Care of the Churches (April 8, 1862)

Apostolicae Nostrae Caritatis - Urging Prayers for Peace (August 1, 1854)

Beneficia Dei - On the 25th Anniversary of his Pontificate (June 4, 1871)

Cum Nuper - On Care for Clerics (January 20, 1858)

Cum Sancta Mater Ecclesia - A Plea for Public Prayer (April 27, 1859)

Etsi Multa - To the Churches in Italy, Germany, and Switzerland (November 21, 1873)

Exultavit Cor Nostrum - On the Effects of the Jubilee Year 1850 (November 21, 1851)

Graves Ac Diuturnae - On the Church in Switzerland (March 23, 1875)

Gravibus Ecclesiae - Proclaiming a Jubilee for 1875 (December 24, 1874)

Incredibili - On Persecution in New Granada (September 17, 1863)

Ineffabilis Deus - Apostolic Constitution on the Immaculate Conception (December 8, 1854)

Inter Multiplices - A Plea for Unity of Spirit (March 21, 1853)

Levate - On the Afflictions of the Church (October 27, 1867)

Maximae Quidem - On the Church in Bavaria (August 18, 1864)

Meridionali Americae - On Seminaries for Native Clergy (September 30, 1865)

Neminem Vestrum - On the Persecution of the Armenians (February 2, 1854)

Nemo Certe Ignorat - On Discipline for the Clergy (March 25, 1852)

Nostis Et Nobiscum - On the Church in the Papal States (December 8, 1849)

Nullis Certe Verbis - On the Need for Civil Sovereignty (January 19, 1860)

Omnem Sollicitudinem - On the Greek-Ruthenian Rite (May 13, 1874)

Optime Noscitis - On the Catholic University in Ireland (March 20, 1854)

Optime Noscitis - On Episcopal Meetings (November 5, 1855)

Praedecessores Nostros - On Aid for Ireland (March 25, 1847)

Probe Noscitis Venerabiles - On the Discipline for Clergy (May 17, 1852)

Quae In Patriarchatu - On the Church in Chaldea (November 16, 1872)

Quanta Cura - Condemnation of Current Errors (December 8, 1864)

Quanto Conficiamur Moerore - On the Promotion of False Doctrines (August 10, 1863)

Quartus Supra - On the Church in Armenia (January 6, 1873)

Qui Nuper - On the Pontifical States (June 18, 1859)

Qui Pluribus - On Faith and Religion (November 9, 1846)

Quod Nunquam - On the Church in Prussia (February 5, 1875)

Respicientes - On the Taking of the Papal States (November 1, 1870)

Saepe Venerabiles Fratres - Thanksgiving for 25 Years (August 5, 1871)

Singulari Quidem - On the Church in Austria (March 17, 1856)

Ubi Nos - On the Papal States (May 15, 1871)

Ubi Primum - On Discipline for Religious (June 17, 1847)

Ubi Primum - On the Immaculate Conception (February 2, 1849)

Vix Dum A Nobis - On the Church in Austria (March 7, 1874)