• The Catholic and Franciscan Heritage
• Franciscan Spirituality
• History of Christianity
• Survey of Franciscan History
• Introduction to Franciscan Theology 

• Ph.D. in theology, The University of Chicago (Divinity School)
• L.H.D., honoris causa, St. Bonaventure University
• S.T.M., Union Theological Seminary, New York.
• S.T.B., Catholic University of America.
• B.A., St. Bonaventure University. 

Books

• "Bonaventure's Interpretation of Scripture in his Exegetical Works," Ph.D.;
• dissertation, University of Chicago, 1979 (printed copies available from microfilm);
• Works of St. Bonaventure, Volume 5: Writings concerning the Franciscan Order. Translation, Introduction and Notes (St. Bonaventure, NY: The Franciscan Institute, 1994);
• Works of St. Bonaventure, Volume 9:  Breviloquium. Translation, Introduction and Notes (St. Bonaventure, NY: The Franciscan Institute, 2005);
• Francis & His Brothers: A Popular History of the Franciscan Friars (Cincinnati: St. Anthony Messenger Press, 2009).

Articles

• "The Way Within: Grace in the Mystical Theology of William of St. Thierry," Citeaux 26 (1975): 31-47;
• "A Reconsideration of the Authorship of the Commentary on the Book of Wisdom Attributed to St. Bonaventure," Archivum Franciscanum Historicum 79 (1986): 359-91;
• Entry "Franciscans," in The Encyclopedia of Religion, Mircea Eliade, gen. ed. (New York: Macmillan, 1987), Vol. 5: 407-408;
• "World Out of Time: The Origins of the Fundamentalist Movement," New Theology Review 1 (1988): 5-20;
• "A Cloud of Witnesses: Some Historical Perspectives on Our Provincial Ministries," The Provincial Annals 37 (1988): 16-43;
• "Washington Theological Union: Twenty Years in Retrospect," Washington;
• Theological Union: Twentieth Anniversary 1968-1988 (Silver Spring, MD, 1988), pp. 4-10;
• "Franciscan Ministry: Changing Contexts and Historical Developments," The Cord 41 (1991): 66-79;
• "Franciscan Higher Education: A 750 Year Tradition," Spirit and Life: A Journal of Contemporary Franciscanism 2 (1992): 59-83;
• “Bonaventure’s Use of ‘the Divine Word’ in Academic Theology,” in That Others May Know and Love: Essays in Honor of Zachary Hayes, OFM, ed. Michael Cusato and F. Edward Coughlin (St. Bonaventure, NY: The Franciscan Institute, 1997): 65-88;
• Entries “Franciscan Friars,” “Hartdegen, Stephen,” “Plassmann, Thomas,” “Poor Clares,” “Robinson, Paschal,” in The Encyclopedia of American Religious History, ed. Michael Glazier and Thomas Shelley (Collegeville, MN: The Liturgical Press, 1997): 526-34, 616-17, 1136-37, 1152-55, 1213;
• “The Experience of the Spirit in Our Franciscan Tradition,” The Cord 49, 3 (1999): 114-129;
• “Roots of the Tradition,” Spirit and Life: a Journal of Contemporary Franciscanism, 8 (1999): 7-20;
• Francis of Assisi: Early Documents, ed. Regis J. Armstrong, J. A. Wayne Hellmann, William J. Short (Hyde Park, N. Y: New City Press). Primary contributor of “Related Documents” section (translation of primary sources, with introductions and notes);
• Volume I: The Saint (1999), pp. 557-609;
• Volume II: The Founder (2000), pp. 769-811;
• Volume III: The Prophet (2001), pp. 737-817; 823-831; 872-892;
• “Franciscans and Healthcare: Our Heritage,” in Franciscans and Healthcare: Facing the Future, ed. Elise Saggau (St. Bonaventure, NY: The Franciscan Institute, 2001):3-28;
• "Francis of Assisi as Vernacular Theologian: A Link to the Franciscan Intellectual Tradition?” in the Franciscan Intellectual Tradition. Washington Theological Union Symposium Papers  2001, CFIT/ESC-OFM Series, Number 1, ed. Elise Saggau (St. Bonaventure, NY: The Franciscan Institute, 2002): 21-42;
• “Franciscan Life and Urban Life,” in Franciscans in Urban Ministry, ed. Roberta McKelvie (St. Bonaventure, NY: The Franciscan Institute, 2002): 5-29;
• “Franciscans, First Order,” New Catholic Encyclopedia, 2nd Edition, Berard Marthaler, Executive Editor (Washington, DC: The Catholic University of America, 2003): Vol. 5: 900-905;
• “The Coming of the Friars to Allegany: One College, Two Provinces, Many Lessons.” Expanded version of an address given at St. Bonaventure University, March 22, 2002 (New York: Holy Name Province, 2003);
• “The Friars Minor: An Order in the Church?” Franciscan Studies 61 (2003): 235-252;
• “Do the Scriptures Make a Difference in Our Lives?” in Franciscans and Scripture: Living in the Word of God. Washington Theological Union Symposium Papers 2005, CFIT/ESC-OFM Series, Number 5, ed. Elise Saggau (St. Bonaventure, NY: The Franciscan Institute, 2006): 1-17;
• “Gospel Preaching and Gospel Life: Similarities and Differences,” in Franciscan Evangelization: Striving to Preach the Gospel. Washington Theological Union Symposium Papers 2007, CFIT/ESC-OFM Series, Number 7, ed. Elise Saggau (St. Bonaventure, NY: The Franciscan Institute, 2008): 9-31;
• “'Deservedly Approved by the Roman Church’: The Context for Papal Recognition of Francis’s Forma Vitae,” The Rule of the Friars Minor 1209-2009: Historical Perspectives: Lived Realities, Spirit and Life: Essays on Contemporary Franciscanism, Vol. 14 (St. Bonaventure, NY: The Franciscan Institute, 2010): 3-31;
• “Bonaventure as Minister General,” A Companion to Bonaventure, ed. Jay M. Hammond, J.A. Wayne Hellmann, and Jared Goff (Brill: Leiden & Boston, 2014), pp. 543-577