Author:Pius IX

Encyclicals

 * Qui Pluribus (November 9, 1846)
 * Praedecessores Nostros (March 25, 1847)
 * Ubi Primum (June 17, 1847)
 * Ubi Primum (February 2, 1849)
 * Nostis Et Nobiscum (December 8, 1849)
 * Exultavit Cor Nostrum (November 21, 1851)
 * Nemo Certe Ignorat (March 25, 1852)
 * Probe Noscitis Venerabiles (May 17, 1852)
 * Inter Multiplices (March 21, 1853)
 * Neminem Vestrum (February 2, 1854)
 * Optime Noscitis (March 20, 1854)
 * Apostolicae Nostrae Caritatis (August 1, 1854)
 * Optime Noscitis (November 5, 1855)
 * Singulari Quidem (March 17, 1856)
 * Cum Nuper (January 20, 1858)
 * Amantissimi Redemptoris (May 3, 1858)
 * Cum Sancta Mater Ecclesia (April 27, 1859)
 * Qui Nuper (June 18, 1859)
 * Nullis Certe Verbis (January 19, 1860)
 * Amantissimus (April 8, 1862)
 * Quanto Conficiamur Moerore (August 10, 1863)
 * Incredibili (September 17, 1863)
 * Maximae Quidem (August 18, 1864)
 * Quanta Cura (December 8, 1864)
 * Meridionali Americae (September 30, 1865)
 * Levate (October 27, 1867)
 * Respicientes (November 1, 1870)
 * Ubi Nos (May 15, 1871)
 * Beneficia Dei (June 4, 1871)
 * Saepe Venerabiles Fratres (August 5, 1871)
 * Quae In Patriarchatu (November 16, 1872)
 * Quartus Supra (January 1873)
 * Etsi Multa (November 21, 1873)
 * Vix Dum A Nobis (March 7, 1874)
 * Omnem Sollicitudinem (May 13, 1874)
 * Gravibus Ecclesiae (December 24, 1874)
 * Quod Nunquam (February 5, 1875)
 * Graves Ac Diuturnae (March 23, 1875)

Bulls

 * Universalis Ecclesiae (September 29, 1850)
 * Ineffabilis Deus (December 8, 1854)
 * Aeterni Patris (June 29, 1868)
 * Apostolicæ Sedis Moderationi (October 12, 1869)
 * Pastor aeternus (1871)

Other

 * Syllabus of Errors (December 8, 1864)
 * To Our Venerable Brother, John, Archbishop of New York (October 18th, 1862)
 * Letter to Jefferson Davis (December 3, 1863)

Works about Pius

 * " as published in Littell's Living Age