Major Papal Documents

Pope Leo XIII

Rerum Novarum (On Capital and Labor) 1891

Pope Pius XI

Ubi Arcano Dei Consilio (On the Peace of Christ in His Kingdom) 1922
Quas Primas (On Christ the King) 1925
Iniquis afflictisque (On the Persecution of the Church in Mexico) 1926
Quadragesimo Anno (On Reconstruction of the Social Order) 1931
Non Abbiamo Bisogno (On Catholic Action in Italy) 1931
Mit Brennender Sorge (On the Church and the German Reich) 1937
Divini Redemptoris (On Atheistic Communism) 1937

Pope Pius XII

Con sempre nuova freschezza (Christmas Message) 1942 
Benignitas et humanitas (Christmas Message) 1944

Pope Saint John XXIII

Mater et Magistra (On Christianity and Social Progress) 1961
Pacem in Terris (On Establishing Universal Peace in Truth, Justice, Charity, and Liberty) 1963

Pope Saint Paul VI

Populorum Progressio (On the Development of Peoples) 1967
Octagesima Adveniens (On the Eightieth Anniversary of Rerum Novarum) 1971
Evangelii Nuntiandi (On Evangelization in the Modern World) 1975

Pope Saint John Paul II

Laborem Exercens (On Human Work on the Ninetieth Anniversary of Rerum Novarum) 1981
Solicitudo Rei Socialis (On the Twentieth Anniversary of Populorum Progressio) 1987
Centesimus Annus (On the Hundredth Anniversary of Rerum Novarum) 1991
Veritatis Splendor (On the Splendor of Truth) 1993
Evangelium Vitae (On the Value and Inviolability of Human Life) 1995
Fides et Ratio (On the Relationship Between Faith and Reason) 1998

Pope Benedict XVI

Deus Caritas Est (On Christian Love) 2005
Sacramentum Caritatis (On the Eucharist as the Source and Summit of the Church’s Life and Mission) 2007
Caritas in Veritate (On Integral Human Development in Charity and Truth) 2009

Pope Francis

Evangelii Gaudium (On the Proclamation of the Gospel in Today’s World) 2013
Laudato Si’ (On Care for Our Common Home) 2015
Fratelli tutti (On Fraternity and Social Friendship), 2020

Conciliar Documents

Gaudium et Spes (Pastoral Constitution on the Church in the Modern World) 1964
Dignitatis Humanae (Declaration on Religious Freedom) 1965

Catechetical Documents

Catechism of the Catholic Church [Link]
Compendium of the Catechism of the Catholic Church [Link]

Other Documents of the Holy See

— Congregation for the Doctrine of the Faith, Instruction Dignitas Personae (On Certain Bioethical Questions), 1998
— Congregation for the Doctrine of the Faith, Doctrinal Note on Some Questions Regarding the Participation of Catholics in Political Life, 2002
— Pontifical Council for Justice and Peace: Compendium of the Social Doctrine of the Church, 2004                         
Pontifical Council for Justice and Peace: The Church and Racism:  Towards a more fraternal society, 1989

United States Conference of Catholic Bishops [link]
U.S. Catholic Catechism for Adults [Link]

Michigan Catholic Conference [link]