Pope Benedict XIV 3 December 1740 - On the Duties of Bishops. Pope Benedict XIV - 14 June 1741 On Jews and Christians Living in the Same Place Pope Benedict XIV - 30 June 1741 - On Forbidding Traffic in Alms. Pope Benedict XIV - 18 May 1743 - On Validity of Marriages Pope Benedict XIV - 1 November 1745 - On Usury and Other Dishonest Profit. Pope Benedict XIV - 1 November 1745 - On Usury and Other Dishonest Profit. Pope Benedict XIV - 29 June 1748 - On Marriage Impediments and Dispensations Pope Benedict XIV - 26 June 1749 - On Preparation for the Holy Year Pope Benedict XIV - 5 May 1749 - Proclaiming a Holy Year for 1750. Pope Benedict XIV 26 June 1754 - On Catechesis Pope Benedict XIV - 1 August 1754 - On Christians Using Mohammedan Names. Pope Benedict XIV - 26 July 1755 On the observance of Oriental Rites Pope Benedict XIV -16 October 1756 - On the Apostolic Constitution Unigenitus Pope Benedict XIV - 1 March 1756 - On the Euchologion Pope Clement XIII 13 September 1758 On Unity Among Christians Pope Clement XIII 20 December 1759 On the Spiritual Advantages of Fasting Pope Clement XIII 17 September 1759 On Observing Canonical Sanctions Pope Clement XIII 14 June 1761 On Instruction in the Faith) Pope Clement XIII 25 November 1766 On the Dangers of Anti-Christian Writings Pope Clement XIII 6 January 1768 On the Church in Poland Pope Clement XIV 21 September 1769 On Abuses in Taxes and Benefices Pope Clement XIV 12 December 1769 Proclaiming a Universal Jubilee Pope Clement XIV 30 April 1774 Proclaiming a Universal Jubilee Pope Pius VI 25 December 1775 Problems of the Pontificate Pope Pius VI 13 April 1791 Civil Oath in France Pope Pius VII 15 May 1800 Return to Gospel Principles Pope Leo XII 24 May 1824 on Proclaiming a Universal Jubilee Pope Leo XII 5 May 1824 on his assuming the Pontificate Pope Leo XII 25 December 1825 On Extending Jubilee to the Entire Church Pope Pius VIII 24 May 1829 Program for the Pontificate Pope Gregory XVI 9 June 1832 On Civil Obedience Pope Gregory XVI 15 August 1832 On Liberalism and Religious Indifferentism Pope Gregory XVI 27 May 1832 On Mixed Marriages Pope Gregory XVI 4 October 1833 On the Pragmatic Constitution Pope Gregory XVI 25 June 1834 On the Errors of Lammenais Pope Gregory XVI 17 May 1835 On Church and State Pope Gregory XVI 18 September 1840 On the Propagation of the Faith Pope Gregory XVI 30 April 1841 On Mixed Marriages Pope Gregory XVI 8 May 1844 On Biblical Societies Pope Pius IX 9 November 1846 On Faith and Religion Pope Pius IX 25 March 1847 Aid for Ireland Pope Pius IX 17 June 1847 Discipline for Religious Pope Pius IX 8 December 1849 Church in the Pontifical States Pope Pius IX 2 February 1849 The Immaculate Conception Pope Pius IX 21 November 1851 Effects of the Jubilee Pope Pius IX 25 March 1852 Discipline for Clergy Pope Pius IX 17 May 1852 Discipline for Clergy Pope Pius IX 21 March 1853 Pleading for Unity of Spirit Pope Pius IX 1 August 1854 Urging Prayers for Peace Pope Pius IX 2 February 1854 Persecution of Armenians Pope Pius IX 20 March 1854 Proposed Catholic University ofIreland Pope Pius IX 5 November 1855 Episcopal Meetings Pope Pius IX 17 March 1856 The Church in Austria Pope Pius IX 3 May 1858 Priests and the Care of Souls Pope Pius IX 20 January 1858 Care for Clerics Pope Pius IX 27 April 1859 Pleading for Public Prayer Pope Pius IX 18 June 1859 Pontifical States Pope Paul IX 19 January 1860 Need for Civil Sovereignty Pope Pius IX 8 April 1862 On the Care of the Churches Pope Pius IX 17 September 1863 Persecution in New Granada Pope Pius IX 10 August 1863 Promotion of False Doctrines Pope Pius IX 18 August 1864 The Church in Bavaria Pope Pius IX 8 December 1864 Condemning Current Errors Pope Pius IX 30 September 1865 Seminary for Native Clergy Pope Pius IX 21 October 1867 Afflictions of Church Pope Pius IX 1 November 1870 Protesting Taking of Pontifical States Pope Pius IX 4 June 1871 25th Anniversary of his Pontificate Pope Pius IX 5 August 1871 Thanksgiving for 25 years of Pontificate Pope Pius IX 15 May 1871 Pontifical States Pope Pius IX 16 November 1872 The Church in Chaldea Pope Pius IX 21 November 1873 Church in Italy, Germany, and Switzerland Pope Pius IX 6 January 1873 The Church in Armenia Pope Pius IX 24 December 1874 Proclaiming Jubilee for 1875 Pope Pius IX 13 May 1874 The Greek-Ruthenian Rite Pope Pius IX - 7 March 1874 - On the Church in Austria Pope Pius IX 23 March 1875 Church in Switzerland Pope Pius IX 5 February 1875 The Church in Prussia Pope Leo XIII 5 September 1877 On the Rosary QUOD APOSTOLICI MUNERIS Pope Leo XIII 21 April 1878 Evils of Society Pope Leo XIII 4 August 1879 On Restoration of Christian Philosophy. Pope Leo XIII 10 February 1880 On Christian Marriage. Pope Leo XIII 30 September 1880 On SS. Cyril and Methodius. Pope Leo XIII 3 December 1880 Mission Societies. Pope Leo XIII 24 June 1888 on Boycotting in Ireland. Pope Leo XXIII 3 August 1881 On Belgium Pope Leo XIII 29 June 1881 On the origin of civil power. Pope Leo XIII 17 September 1882 St. Francis of Assisi Pope Leo XIII 15 February 1882 Conditions in Italy. Pope Leo XIII 8 December 1882 Conditions in Spain Pope Leo XIII 1 September 1883 Devotion of the Rosary Pope Leo XIII 8 February 1884 on Religious Question in France. Pope Leo XIII 20 April 1884 Freemasonry Pope Leo XIII 30 August 1884 Rosary-4 Pope Leo XIII 27 November 1885 On Education Pope Leo XIII 22 December 1885 Extraordinary Jubilee. Pope Leo XIII 1 November 1885 Christian Constitution of States Pope Leo XIII 6 January 1886 Catholicism in Germany Pope Leo XIII 22 August 1886 Liberty of the Church. Pope Leo XIII 14 September 1886 Church in Portugal. Pope Leo XIII 22 December 1887 on Church in Bavaria. Pope Leo XIII 20 September 1887 Rosary and Public Life Pope Leo XIII 5 May 1888 on Abolition of Slavery Pope Leo XIII 1 April 1888 On his Sacerdotal Jubilee Pope Leo XIII 10 December 1888 Pope Leo XIII 21 December 1888 Church in Ireland. Pope Leo XIII 20 June 1888 Nature of Human Liberty. Pope Leo XIII 25 December 1888 Right Ordering of Christian Life. Pope Leo XIII 7 March 1889 on Catholic University Pope Leo XIII 15 August 1889 Devotion to St. Joseph. Pope Leo XIII 15 October 1890 Freemasonry in Italy. Pope Leo XIII 10 January 1890 Christians as citizens. Pope Leo XIII20 November 1890 Slavery in Missions Pope Leo XIII 3 March 1891 on Reunions in Austria. Pope Leo XIII 12 September 1891 Morality of Dueling Pope Leo XIII 15 June 1891 Religious Union Pope Leo XIII 15 May 1891 Capital and Labor Pope Leo XIII 22 September 1891 The Rosary-1 Pope Leo XIII 16 July 1892 On Columbus Quadri-centennial Pope Leo XIII 16 February 1892 On the Church and State in France. Pope Leo XIII 8 December 1892 Freemasonry. Pope Leo XIII 8 December 1892 On Freemasonry Pope Leo XIII 8 September 1892 The Rosary-2 Pope Leo XIII 2 September 1893 Church in Hungary. Pope Leo XIII 24 June 1893 Seminaries for Native Clergy Pope Leo XIII 18 November 1893 Study of Holy Scripture. Pope Leo XIII 8 September 1893 Rosary-3 Pope Leo XIII 2 July 1894 on Clergy in Brazil. Pope Leo XIII 24 December 1894 on Propagation of the Faith-Eastern Churches Pope Leo XIII 8 September 1894 Rosary-5 Pope Leo XIII 10 July 1895 Social Conditions in Belgium. Pope Leo XIII 20 September 1896 The Rosary Pope Leo XIII 1 May 1896 The Hungarian Millennium Pope Leo XIII 29 June 1896 Unity of the Church Pope Leo XIII 8 December 1897 On the Manitoba School Question Pope Leo XIII 12 September 1897 On the Confraternity of the Holy Rosary Pope Leo XIII 9 May 1897 On the Holy Spirit Pope Leo XIII 1 August 1897 St. Peter Canisius. Pope Leo XIII 25 July 1898 On Church in Scotland. Pope Leo 13 5 September 1898 On the Rosary. Pope Leo XIII 16 August 1898 Civil Marriage Law Pope Leo XIII 25 December 1898 Latin American Bishops' Plenary Council Pope Leo XIII 5 August 1898 Suppression of Catholic Institutions Pope Leo XIII 25 May 1899 On concentration to the Sacred Heart Pope Leo XII 8 September 1899 On Education of Clergy. Pope Leo XIII 18 September 1899 Education of Clergy Pope Leo XIII 21 July 1900 Unity Among the Greek Melchites. Pope Leo XIII 1 November 1900 Jesus the Redeemer Pope Leo XIII 18 January 1901 Christian Democracy Pope Leo XIII 16 May 1901 Religious Orders in Portugal Pope Leo XIII 20 August 1901 Language Question in Bohemia Pope Leo XIII 20 November 1901: On the Foundation of a Seminary in Athens Pope Leo XIII 8 December 1902 Education of the Clergy Pope Leo XIII 15 April 1902 Church in the United States. Pope Leo XIII 28 May 1902 Holy Eucharist. Pope Leo XIII 24 December 1902 Marriage Legislation. Pope Leo XIII 22 November 1902 Church in Bohemia and Moravia. Pope Leo XIII 30 April 1902 Proposed Catholic University Pope Pius X 4 October 1903 Restoration of All things in Christ. Pope Pius X 12 March 1904 Pope Gregory the Great Pope Pius X 2 February 1904 Immaculate Conception Pope Pius X 15 April 1905 Teaching Christian Doctrine Pope Pius X 11 June 1905 Catholic Action in Italy Pope Pius X 28 July 1906 Clergy in Italy Pope Pius X 10 August 1906 French Associations of Worship Pope Pius X 11 February 1906 French Law of Separation Pope Pius X 5 April 1906 Mariavites or Mystic Priests of Poland Pope Pius X 6 January 1907 Separation of Church and State Pope Pius X 8 September 1907 Doctrine of the Modernists Pope Pius X 21 April 1909 St Anselm of Aosta Pope Pius X 26 May 1910 St. Charles Borromeo Pope Pius X 24 May 1911 Law of Separation in Portugal Pope Pius X 7 June 1912 Indians of South America Pope Pius X 24 September 1912 Labor Organizations Pope Benedict XV - 1 November 1914 - On Appealing for Peace. Pope Benedict XV 15 June 1917 On Preaching the Word of God. Pope Benedict XV 1 December 1918 On the Future Peace Conference. Pope Benedict XV 14 May 1919 On St. Boniface Pope Benedict XV - 24 November 1919 - On the Children of Central Europe. Pope Benedict XV - 1 December 1920 - On Children of Central Europe. Pope Benedict XV - 5 October 1920 - On St. Ephrem the Syrian Pope Benedict XV - 23 May 1920 - On Peace and Christian Reconciliation Pope Benedict XV 15 September 1920 On St. Jerome Pope Benedict XV 29 June 1921 On St. Dominic. Pope Benedict XV 6 January 1921 On the Third Order of St. Francis Pope Benedict XV 30 April 1921 On Dante Pope Pius XI 23 December 1922 Peace of Christ Pope Pius XI 12 November 1923 St. Josaphat Pope Pius XI 26 January 1923 St. Francis De Sales Pope Pius XI 29 June 1923 St. Thomas Aquinas Pope Pius XI 18 January 1924 French Diocesan Associations Pope Pius XI 11 December 1925 Feast of Christ the King Pope Pius XI 18 November 1926 Persecution of Church in Mexico Pope Pius XI 8 February 1926 Catholic Missions Pope Pius XI 13 April 1926 St. Francis of Assisi Pope Pius XI 8 May 1928 Reparation to the Sacred heart Pope Pius XI 6 January 1928 Religious Unity Pope Pius XI 8 September 1928 Promotion of Oriental Studies Pope Pius XI 31 December 1929 Christian Education Pope Pius XI 20 December 1929 Promotion of Spiritual Exercises Pope Pius XI 23 December 1929 His Sacerdotal Jubilee Pope Pius XI 31 December 1930 Christian Marriage Pope Pius XI 30 April 1930 St Augustine Pope Pius XI 29 June 1931 Catholic Action in Italy Pope Pius XI 2 October 1931 Economic Crisis Pope Pius XI 15 May 1931 Reconstruction of the Social Order Pope Pius XI 25 December 1931 Council of Ephesus Pope Pius XI 29 September 1932 Persecution of Church in Mexico Pope Pius XI 3 May 1932 Sacred Heart Pope Pius XI 3 June 1933 Oppression of Church of Spain Pope Pius 20 December 1935 Catholic Priesthood Pope Pius XI 29 June 1936 On Motion Pictures Pope Pius XI 14 March 1937 Church and German Reich Pope Pius XI 19 March 1937 Atheistic Communism Pope Pius XI 29 September 1937 On the Rosary Pope Pius XI 28 March 1937 Religious Situation in Mexico Pope Pius XII 1 November 1939 Hierarchy in US Pope Pius XII 20 October 1939 Unity of Human Society Pope Pius XII 13 June 1940 8th Centenary of Portugal Independence Pope Pius XII 30 September 1943 Divine Spirit Pope Pius XII 29 June 1943 Mystical Body of Christ Pope Pius XII 9 April 1944 St. Cyril Pope Pius XII 15 April 1945 Communium Interpretes Doloraum Pope Pius XII 23 December 1945 Reunion of the Ruthenian Church Pope Pius XII 1 May 1946 On Mary Pope Pius XII 6 January 1946 World's Destitute Children Pope Pius XII 20 November 1947 Sacred Liturgy Pope Pius XII 18 December 1947 Public Prayers for Peace Pope Pius XII 21 March 1947 St. Benedict Pope Pius XII 1 May 1948 Prayers for World Peace Pope Pius XII 24 October 1948 Prayers for Peace in Palestine Pope Pius XII 15 April 1949 Holy Places in Palestine Pope Pius XII 12 March 1950 Combating Atheistic Propaganda Pope Pius XII 12 August 1950 False Opinions of Catholic Doctrine Pope Pius XII 19 July 1950 Public Prayers for Peace Pope Pius XII 6 December 1950 Crusade of Prayer for Peace Pope Pius XII 2 June 1951 Promotion of Catholic Missions Pope Pius XII 15 September 1951 Reciting the Rosary Pope Pius XII 8 September 1951 Council of Chalcedon Pope Pius XII 15 December 1952 Persecuted Eastern Church Pope Pius XII 24 May 1953 St. Bernard of Clairvaux Pope Pius XII 8 September 1953 Commemorate Centenary-Dogma of Immaculate Conception Pope Pius XII 11 October 1954 AD CAELI REGINAM Pope Pius II 5 June 1954 St. Boniface Pope Pius XII 25 March 1954 Consecrated Virginity Pope Pius XII 7 October 1954 Supranationality of the Church Pope Pius XII 25 December 1955 Sacred Music Pope Pius XII 5 November 1956 Sorrowful Events in Hungary Pope Pius XII 15 May 1956 Devotion to Sacred Heart Pope Pius XII 1 November 1956 Prayers for Peace Pope Pius XII 28 October 1956 Prayers for people of Hungary Pope Pius II 21 April 1957 Present Condition of Missions Pope Pius XII 16 May 1957 St. Andrew Bobola Pope Pius XII 8 September 1957 Motion Pictures, Radio, Television Pope Pius XII 2 July 1957 Warning Against Materialism-Lourdes Pope Pius XII 29 June 1958 Communism and the Church in China Pope Pius XII 14 July 1958 Prayers for the Persecuted Church Pope John XXIII 26 September 1959 Reflections on first year. Pope John XXIII 29 June 1959 On Truth, Unity and Peace Pope John XXIII 28 November 1959 The Prince of the Shepherds Pope John XXIII 1 August 1959 On St. John Vianney Pope John XXIII 11 November 1961 On St. Leo the Great Pope John XXIII 15 May 1961 On Health and Apostolic Benediction Pope John XXIII 1 July 1962 On Penance Pope John XXIII 11 April 1963 Peace on Earth Pope Paul VI 6 August 1964 Paths of the Church Pope Paul VI 30 April 1965 On the First of May Pope Paul VI 3 September 1965 Mystery of Faith Pope Paul VI 15 September 1966 Mother of Christ Pope Paul VI 26 March 1967 Development of Peoples Pope Paul VI 24 June 1967 Celibacy of the Priest Pope Paul VI 25 July 1968 The Regulation of Birth John Paul II 4 March 1979 Redemption and Dignity of Human Race Pope John Paul II 30 November 1980 Mercy of God Pope John Paul II 14 September 1981 On Human Work Pope John Paul II 14 September 1981 On Human Work John Paul II 2 June 1985 Slavorum Apostoli - The Apostles of the Slavs Pope John Paul II 5 May 1986 Lord and Giver of Life Pope John Paul II 25 March 1987 Mary in Life of Pilgrim Church Pope John Paul II 30 December 1987 20th Anniversary of Populorum Progressio Pope John Paul II 7 December 1990 Validity of Church's Missionary Mandate. Pope John Paul II 1 May 1991 On the Hundredth Anniversary of Rerum Novarum Pope John Paul II 6 August 1993 The Splendor of Truth Encyclical Letter Evangelium Vitae Pope John Paul II 25 May 1995 That They May Be One Pope John Paul II 14 September 1998 Faith and reason Pope John Paul 17 April 2003 II Ecclesia de Eucharistia Benedict XVI - 25 December 2005 - Deus Caritas Est Pope Benedict XVI 30 November 2009 Spe Salvi Pope Benedict XVI 29 June 2009 Caritas in Veritate