NOTE: Some of these files are rather large; please be patient. Most are PDF format.

Old Catholic

• Arx, Urs von; Paul Avis; and Mattjis Ploeger, eds. Towards Further Convergence: Anglican and Old Catholic Ecclesiologies —The Papers of the Anglican – Old Catholic Theologians’ Conference, Leeds, 29 August – 2 September 2005, supplement to Internationale kirchliche Zeitschrift. (2006).
  
  
  • Aebersold, Sarah. "The Church Local and Universal." Internationale kirchliche Zeitschrift 96 (2006), 85-101.
    
    
  • Arx, Urs von. "Preface," Internationale kirchliche Zeitschrift 96 (2006), 4-6.
    
    
  • Arx, Urs von. "Unity and Communion, Mystical and Visible." Internationale kirchliche Zeitschrift 96 (2006), 140-173.
    
    
  • Avis, Paul. "Anglicanism and Eucharistic Ecclesiology." Internationale kirchliche Zeitschrift 96 (2006), 28-45.
    
    
  • Esser, Günter. "Episcopacy - Conciliarity - Collegiality - Primacy: The Theology and the Task of Episcopacy from an Old Catholic Perspective." Internationale kirchliche Zeitschrift 96 (2006),  72-84.
    
    
  • Hind, John. "Unity and Communion, Mystical and Visible." Internationale kirchliche Zeitschrift 96 (2006), 116-139.
    
    
  • Ploeger, Mattijs. "Catholicity, Apostolicity, the Trinity and the Eucharist in Old Catholic Ecclesiology." Internationale kirchliche Zeitschrift 96 (2006), 7-27.
    
    
  • Podmore, Colin. "Collegiality, Conciliarity and Primacy: An Anglican Perspective." Internationale kirchliche Zeitschrift 96 (2006), 46-71.
    
    
  • Schoon, Dick J. "Report of the Plenary Discussions." Internationale kirchliche Zeitschrift 96 (2006), 174-178.
    
    
  • Wright, J. Robert. "Anglican and Old Catholic Ecclesiology, both Local and Universal, in Light of the Windsor Report." Internationale kirchliche Zeitschrift 96 (2006), 102-115.
    
    
  • Schedule of the Conference, Internationale kirchliche Zeitschrift 96 (2006), 179-180.
    
    
  • List of Participants, Internationale kirchliche Zeitschrift 96 (2006), 181-182.
    
    
  • List of Contributors, Internationale kirchliche Zeitschrift 96 (2006), 183-184.
    
    
• Aldenhoven, Herwig. “Darbringung und Epiklese im Eucharistiegebet: Eine Studie über die Struktur des Eucharistiegebetes in den altkathohschen Liturgien im Lichte der Liturgiegeschichte.” Internationale kirchliche Zeitschrift 61 (1971), 79-117.
  
  
• Atherstone, Andrew. “Anglican Evangelicals, Old Catholics, and the Bonn Agreement.” Internationale kirchliche Zeitschrift 97 (2007), 23-47.
  
  
• Berlis, Angela. “Mission Accomplished? : Challenges of the Bonn Agreement (1931) for Today.” Internationale kirchliche Zeitschrift 103 (2012) 18-44.
  
  
• Berlis, Angela, and Dick Schoon. “Jansenism across the Border: the Interaction in the 17th and 18th Century between Catholic Theologians in France and in the Dutch Republic.” Internationale kirchliche Zeitschrift 99 (2009) 145-169.
  
  
• Frei, Hans A. “Die altkatholische Kirche - ein Modell für die Ökumene.” Internationale kirchliche Zeitschrift 77 (1987), 76-85.
  
  
• Holeton, David R., and Petr. Jan Vinš. "Anglican Influence on Old Catholic Liturgy." Revue Française de Civilisation Britannique [Online], XXII-1 | 2017, 1-12. 
  
  
• Internationalen Altkatholischen Bischofskonferenz, “Die ökumenische Aufgabe der Altkatholischen Utrechter Union heute : eine Standortbestimmung der Internationalen Altkatholischen Bischofskonferenz (IBK).” Internationale kirchliche Zeitschrift 102 (2012), 305-313.
  
  
• Kijas, Zdisaw J. “Der Dialog zwischen der Römisch-Katholischen und der Altkatholischen Kirche auf internationaler Ebene (2004-2009).” Internationale kirchliche Zeitschrift 102 (2012), 180-202.
  
  
• Methuen, Charlotte. “The Bonn Agreement and the Catholicization of Anglicanism: Anglicans and Old Catholics in the Lang Papers and the Douglas Papers 1920-1939.” Internationale kirchliche Zeitschrift 97 (2007) 1-22.
  
  
• Ploeger, Mattijs. “Life – Death – Resurrection – Church: On the Coherence of Some Central Christian Notions.” Internationale kirchliche Zeitschrift 96 (2006), 45-50.
  
  
• Pursch, Kurt. “Frauen als Priester.” Internationale kirchliche Zeitschrift 63 (1973), 129-167.
  
  
• Rowell,  Geoffrey. “Opening Address: Historical and Contemporary Perspectives on Anglican - Old Catholic Communion.” Internationale kirchliche Zeitschrift 102 (2012) 6-15.
  
  
• Simmons, CJ, Gemma. “Jansenism: An Early Ressourcement Movement?” in Ressourcement: A Movement for Renewal in Twentieth-Century Catholic Theology, Gabriel Flynn and Paul D. Murray, eds. (Oxford University Press, 2012) 23-35.
  
  
• Smit, Peter-Ben. “The Old Catholic Understanding of Catholicity.” Internationale kirchliche Zeitschrift 100 (2010), 90-93.
  
  
• ———. "The Old Catholic View on Scripture and Tradition: a Short Study of a Theological Organism." Internationale kirchliche Zeitschrift 97 (2007), 106-123.
  
  
• The Celebration of the Eucharist in the Catholic Diocese of the Old Catholics in Germany — liturgical text (English).
  
  
• Vercammen, Joris A.O.L. “Opening Address: 80 Years Bonn Agreement, 10 Years Charta Oecumenica.” Internationale kirchliche Zeitschrift 102 (2012), 3-5.
  
  
• Williams, Rowan. “One Hope, One Church.” Internationale kirchliche Zeitschrift 96 (2006), 207-216.
  
  
• Wright, J. Robert. “Anglican and Old Catholic Ecclesiology, both Local and Universal, in Light of the Windsor Report.” Internationale kirchliche Zeitschrift 96 (2006), 102-115.

Bonaventure

• Bonaventure. "In Praise of the Sacred Cross." Hartford Quarterly 4 no 4 (Summer 1964), 5-13. Translated from the Latin by David H. Graham.
  
  
• Bonaventure. "Commentary on the Sentences [of Peter Lombard]: Prologue." Franciscan Studies, vol. 66 (2008), 75-83.
  
  
• Brandt, Ryan A. “Reading Scripture Spiritually: Bonaventure, the Quadriga, and Spiritual Formation Today.” Journal of Spiritual Formation & Soul Care 10 no 1 Spring 2017, 12-32.
  
  
• Horan, Daniel P. "Christocentricity, Unity, and Ethics in Bonaventure's Theology of the Eucharist." Worship, vol. 85 (November 2011), 503-519.
  
  
• Hughes, Kevin L. "Bonaventure Contra Mundum? The Catholic Theological Tradition Revisited." Theological Studies 74 (2013), 372-398.
  
  
• Kimball, Kasey. “Bonaventure on Creation: A Ressourcement for the Modern World.” Crux, 51 no 4 (Winter 2015), 15-21.
  
  
• León-Sanz, Isabel María. “La creación como arte de la Trinidad en san Buenaventure.”  Scripta Theologica 47 no 3 (Dec 2015), 579-605.
  
  
• Muscat, OFM, Noel. "Francis of Assisi and Bonaventure's Theology of the Cross."
  
  
• Murray, Russel. "Mirror of Experience: Palamas and Bonaventure on the Experience of God — a Contribution to Orthodox-Roman Catholic Dialogue." Journal of Ecumenical Studies 44 no 3 (Summer 2009), 432-460.
  
  
• Schweitzer, Don. “Aspects of God's Relationship to the World in the Theologies of Jürgen Moltmann, Bonaventure and Jonathan Edwards.” Religious Studies and Theology, 26 no 1 (2007), 5-24.
  
  
• Woźniak, Robert, "La teología de la mediación de Cristo en las obras sistemáticas de san Buenaventura." Scripta Theologica 49 no 2 (Aug 2017) 327-349.

Ilia Delio

• Delio, Ilia. "Bonaventure's Metaphysics of the Good." Theological Studies 60 (1999), 228-246.
  
  
• Delio, Ilia. "Brain Science and the Biology of Belief: A Theological Response." Zygon vol. 38, no. 3 (September 2003), 573-585.

Resources from Utrecht Summer School

• Aldenhoven, Herwig. "Presidency at the Eucharist in the Context of the Theology of Icons: Questions about the Ecclesial Representation of Christ by the Priesthood."
  
  
• Arx, Urs von. "The Old Catholic Churches of the Union of Utrecht."
  
  
• Goergen, Donald J. "Spirituality," The Praxis of the Reign of God: An Introduction to the Theology of Edward Schillebeeckx." Mary Catherine Hilkert and Robert J. Schreiter, eds.
  
  
• Hallebeek, Jan. "Questions of Canon Law Concerning the Election and Consecration of a Bishop for the Church of Utrecht: The Casus Resolutio of 1722."
  
  
• ———. "The Old Catholic Synods: Traditional or Innovative Elements within the Constitution of the Church?"
  
  
• Statutes of the International Old Catholic Bishops Conference, with the 1889 Declaration of Utrecht as an appendix
  
  
• Ouwens, Koenraad. "Liturgy in the Old-Catholic Church."
  
  
• Parker, Charles H. Faith on the Margins: Catholic and Catholicism in the Dutch Golden Age, Introduction and chapters 1 and 3
  
  
• Ploeger, Mattijs. "Catholicity, Apostolicity, the Trinity and the Eucharist in Old Catholic Ecclesiology." Internationale kirchliche Zeitschrift 96 (2006), 7-27.
  
  
• ———. "Thoughts about systematic theology in Old Catholic perspective."
  
  
• ———. Celebrating Church: Ecumenical Contributions to a Liturgical Theology
  
  
• Selected Bibliography (English) of Old Catholic Theology
  
  
• Velde, Wietse van der. "Who are the Old Catholics? Their history, organization and ecumenical relations."
  
  
• Vercammen, Joris. "The Old-Catholic Churches and the 'construction of Europe."
  
  
• Visser, Jan. "The Old Catholic churches of the Union of Utrecht." International Journal for the Study of the Christian Church, 3:1, 68-84 

General

• Baakier, Edward. “Polish Sources of the Ideology of the National Church Organised by Bishop Franciszek Hodur.” Internationale kirchliche Zeitschrift 76 (1986), 96-108.
  
  
• Brodd, Sven-Erik. “A Diaconate Emerging from Ecclesiology: Towards a Constructive Theology on the Office of Deacon.” Internationale kirchliche Zeitschrift 95 (2005), 266-288.
  
  
• Chandler, Michael. “The Significance of the Friendship between William E. Gladstone and Ignaz von Döllinger.” Internationale kirchliche Zeitschrift 90 (2000), 153-167.
  
  
• Hryniewicz, Waclaw. “Towards a More Paschal Christianity: Ecumenism and Kenotic Dimensions of Ecclesiology.” Internationale kirchliche Zeitschrift 91 (2001), 22-43.
  
  
• Johansen, Alf. “Bishop Mihail (Mudjugin), The Foundations of Orthodox Teaching on Personal Salvation according to Holy Scripture and the Holy Fathers.” Internationale kirchliche Zeitschrift 71 (1981), 33-27.
  
  
• Lindow, Anders. “The Church of Sweden Model of Catholicity.” Internationale kirchliche Zeitschrift 100 (2010), 119-125.
  
  
• Vergara, Winfred B. “The Catholicity of the Episcopal Church in the Philippines.” Internationale kirchliche Zeitschrift 100 (2010), 104-118.
  
  
• Ruazol, Wilfredo L. “Understanding Catholicity from the Perspective of the Iglesia Filipina Independiente.” Internationale kirchliche Zeitschrift 100 (2010), 94-103.
  
  
• Williams, Rowan. “The Unity of the Church and the Unity of the Bible: An Analogy.” Internationale kirchliche Zeitschrift 91 (2001), 5-21.
  
  
• Zizioulas, Ioannis. “Uniformity, Diversity and the Unity of the Church.” Internationale kirchliche Zeitschrift 91 (2001), 44-59.

LITURGICAL TEXTS

Old Catholic

• Mathew, Arnold H. The Old Catholic Missal and Ritual, London: Cope and Fenwick, 1909.

Anglican resources

• Anglican Church of Canada — Copyright restrictions prevent a direct download here, but the Book of Alternative Services and half a dozen other liturgical texts are freely available from the Anglican Church of Canada's website — click here.
  
  
• American Book of Common Prayer, 1979
  • Single PDF file
  • BCP online
   
• Spanish language books
  • El Libro de Oración Común, 1979 (Book of Common Prayer)
  • Ritual para Ocasiones Especiales, 1990 (Book of Occasional Services)
  • Santas, Santos: Celebración de los Santos (Holy Women, Holy Men)
   
• Enriching Our Worship
  • Enriching Our Worship 1: Morning and Evening Prayer, The Great Litany, The Holy Eucharist (1997)
  • Enriching Our Worship 2: Ministry with the Sick or Dying, Burial of a Child (2000)
  • Enriching Our Worship 3: Burial Rites for Adults, Rite for the Burial of a Child (2006) 
  • Enriching Our Worship 4: The Renewal of Ministry with the Welcoming of a New Rector or Other Pastor (2006)
  • Enriching Our Worship 5: Liturgies and Prayers Related to Childbearing, Childbirth, and Loss (2009)

1998 Roman sacramentary

• Volume 1, Sundays and Feasts, Part 1
• Volume 1, Part 2
• Volume 2, Weekdays, Part 1
• Volume 2, Part 2 

Weekday lectionary (Canadian Conference of Catholic Bishops)

• Volume A
• Proper of Seasons
• Ordinary Time (Weeks 1-9) Years I and II
• Proper of Saints (November-June)
• Commons
• Volume B
• Proper of Seasons
• Ordinary Time (Weeks 6-34) Years I and II
• Proper of Saints (May 12-December 4)
•  Commons

a