Ernani Costantini, Santa Caterina da Siena, part., 1983, chiesa di S. Bartolomeo, Fossò (VE)
Pius II, Bull of canonization of Saint Catherine of Siena (June 29, 1461) (engl. transl.: http://www.drawnbylove.com)
Pius IX, Apostolic Letter Quamvis Urbs Roma (April 13, 1866) (original text)
Pius XII, Papal Brief with which Saint Francis of Assisi and Saint Catherine of Siena are proclaimed Primary Patrons of Italy (June 18, 1939) (original text)
Pius XII, Address Ammirevole spettacolo on the memorial of the Patron Saints of Italy: Saint Francis of Assisi and Saint Catherine of Siena (May 5, 1940) (original text)
Pius XII, Apostolic Letter Inter gravissimas (September 15, 1943) (original text)
John XXIII, Letter Hoc anno to Father Michael Browne, O.P., Master General of the Order of Preachers, on the occasion of the fifth centenary of canonization of Saint Catherine of Siena (July 20, 1961).
Paul VI, General audience (April 30, 1969) (engl. transl.: http://www.drawnbylove.com)
Paul VI, Apostolic Letter Mirabilis in Ecclesia Deus proclaiming St. Catherine of Siena a Doctor of the Church (october 4, 1970) (engl. transl.: http://www.drawnbylove.com )
Paul VI, Homily: Saint Catherine of Siena, Doctor of the Church (October 4, 1970) (engl. transl.: http://www.drawnbylove.com)
John Paul II, Apostolic Letter Amantissima Providentia on the 6th Centenary of the Death of St. Catherine of Siena (April 29, 1980) (original text)
John Paul II, Homily in the 6th Centenary of the death of St. Catherine of Siena (April 29, 1980) (original text)
John Paul II, Speech to young people of Siena (September 14, 1980) (original text)
John Paul II, Speech to Bishops of Tuscany (September 14, 1980) (original text)
John Paul II, Speech to the Dominican Friars while visiting the Church of Saint Dominic (September 14, 1980)
John Paul II, Homily in Piazza del Campo (Siena, september 14, 1980)
John Paul II, Letter to Msgr. Gaetano Bonicelli, Archbishop of Siena (October 1, 1995), on 25th anniversary of Catherine's doctorat (engl. transl.: http://www.drawnbylove.com)
John Paul II, Apostolic Letter issued Motu Proprio proclaiming Saint Bridget of Sweden, Saint Catherine of Siena and Saint Teresa Benedicta of the Cross co-patronesses of Europe (October 1, 1999) (engl. transl.)
Benedict XVI, General audience (November 24, 2010) (engl. transl.)
Francis, Letter to Msgr. Augusto Paolo Lojudice, Archbishop of Siena (October 4, 2020), on 50th anniversary of Catherine's doctorat (original text)