CONFERENCE PAPERS AND LECTURES
Invited keynote speaker, “Extreme Architecture around the World,” Fulbright Annual Symposium, Yale University, New Haven, December 2023.
“Art and Environment in America,” lecture presented in conjunction with exhibition Art for the People: Earth,  American Embassy, Beijing, China, with simultaneous Chinese translation, April 2022, online.
“Public Art in America,” presented in conjunction with exhibition Art for the People, American Embassy, Beijing, China, with simultaneous Chinese translation, May 2021, online.
Invited panelist/speaker, Community Day for Visiting International Fulbright Researchers, NY, NY, Feb. 2020
Invited plenary speaker, “Medieval Mischief: Wit and Humor in the Art of the Middle Ages,” International Society for Humor Studies conference, University of Texas-Austin, 2019
Invited keynote speaker, “The Medieval Menagerie: Animals in the Art of the Middle Ages,” Medieval Animals   Conference, Institute for Medieval Studies, University of New Mexico, 2017.
Invited speaker, “The Museum as Cultural Magnet: Enhanced Experience, Increased Attendance,” Museums of the   XXI Century: New Educational Paradigms, International Roundtable, State Hermitage Museum, St.  Petersburg, Russia, fall 2015.
Invited keynote speaker, “A Different Approach to Travel,” Golden Key Honor Society induction, 2015, Pace  University, Pleasantville, NY.
Invited speaker, “Art and Politics in America,” Dyson Seminar in the Humanities and Social Sciences, Pace  University, NY, fall 2015.
Invited speaker, Virtual Exhibition Project: Fostering Ties between Future Museum Curators in the U.S. and Russia, The Museum and Museum Specialists: Problems of Professional Education Conference, State Hermitage    Museum, St. Petersburg, Russia, fall 2014.
Invited speaker, Three Women Who Broke the Glass Ceiling in the Art World, for Morgan Stanley financial services, Bruce Museum, Greenwich, CT, fall 2014; Metropolitan Museum of Art, NY, spring 2014.
Invited keynote speaker, “Holy Terrors: Gargoyles on Medieval Buildings,” Medieval Myths and Monsters Conference, Institute for Medieval Studies, University of New Mexico, 2013.
Invited Speaker, “Medieval Bestiaries: Similarity and Disparity of Information in Text and Image,” Word and Image Conference, European University, St. Petersburg, Russia, 2012.
Invited speaker, “Extreme Architecture: Global Ambitions and Accomplishments,” Construction and Architecture: Urbanization and Modern Trends in Megacities Conference, Moscow, Russia, 2012.
Chair, session, “Disjecta Membra: The Evidence of Fragments,” 47^th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2012.
Chair, session, “Devotional Printed Books in England, 1476-1526,” 45^th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2010.
Chair, session, “Making Books in Westminster and/or London II: Scribes, Printers, Artisans,” 44^th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2009.
Chair, session, "Pilgrimage of Pleasure: Literary MSS/Books and their Peregrinations," 43rd International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2008.
Chair, session, "Images of Nature in Late Medieval Manuscripts and Printed Books," 42nd International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2007.
Chair, session, "Written and Printed Ordinatio: Materials and Methods," 41st International Congress on
Medieval Studies, Medieval Institute, Western Michigan University, 2006.
Chair, session, "Picturing Creation and Its Creatures in Manuscripts and/or Early Printed Books," 40th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2005.
Chair, session, "Libraries, Collections, and Collectors in the Later Middle Ages," 39th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2004.
Chair, session, "Medieval Childhood: Portraits and Texts in MSS and/or Early Printed Books," 38th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2003.
Chair, session, "Texts in Strange Places: Epigraphy and Inscription," 37th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2002.
Invited speaker, "Artists and their Sources of Inspiration: Leonardo da Vinci," and panelist in session on "Messengers from the Past," Applied Brilliance Conference, sponsored by Architecture and Interiors magazines, Sedona, AZ, 2001 (Special Report in Architecture, NY, 2001, 89-91).
Chair, session, "The Poets and the Page: Presentation and Layout," 36th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2001.
Chair, session, "Millennium Madness: Images of Heaven and Hell in Medieval Art and Literature," 35th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 2000.
“Depictions of the Nude on Romanesque Churches,” International Medieval Congress, University of Leeds, 1999.
“Wit and Humor as Didactic Devices in Medieval Church Art,” and co-chaired session on Wit and Humor in Medieval Art and Literature, 33rd International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1998.
“Medieval Mischief: Clever Uses of Context in Medieval Sculpture,” and chaired session on Late Medieval Art and Culture, International Medieval Congress, University of Leeds, 1997.
Chair, session, The Making of Manuscripts: Text and Illumination, 31st International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1996.
Invited speaker, “Fictive Architectural Borders and Pictorial Space c.1300,” International conference on Le rôle de l'ornement dans la peinture murale du moyen age, Saint-Lizier, France, 1995 (published in Cahiers de Civilisation Médiévale, Poitiers, 1998, 197-207, pls. LIII-LIX).
“A Categorization of Monstrosities in Medieval Art,” and co-chaired two sessions on Monstrosities in Medieval Art and Literature, 30th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1995.
“Gargoyles: Animal Imagery and Artistic Individuality,” and co-chaired session on Animals in Medieval Art and Literature, 29th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1994.
“The Clever Carver: Wit in English Medieval Sculpture,” 28th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1993.
Invited keynote speaker, “Impact of Images on Ethical Judgment,” Dyson College Society of Fellows Conference, Pace University, Pleasantville, NY, 1991.
Opening address on “A Categorization of Medieval Animal Imagery,” and co-chaired session on The            Medieval Menagerie: Animals in Medieval Thought, 26th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1991.
“Gargoyles,” Conference on Fantastic Beasts, Pace University, White Plains, NY, 1991.
Opening address, “An Overview of the Merode Altarpiece,” and co-chaired session on The Merode Altarpiece: Reflections, Reconsiderations, and Revelations, and presented paper on “Antique Antecedents for Medieval Monsters,” and co-chaired session on The Medieval Menagerie: Animals in Medieval Thought, 25th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1990.
Invited speaker, “The Centaur: A Medieval Beast Boasts an Ancient Lineage,” Conference on Folklore and Fantasy, Pace University, White Plains, NY, 1990.
Opening address, “Some Problems: Sources, Significances,” and co-chaired two sessions on The Medieval Menagerie: Animals in Medieval Thought, 24th International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1989.
“The Animal Symbols of the Evangelists,” 23rd International Congress on Medieval Studies, Medieval Institute, Western Michigan University, 1988.
“Ancient Roman Murals and the Development of Pictorial Space,” The Classics in the Middle Ages Conference, Center for Medieval and Early Renaissance Studies, SUNY-Binghamton, 1986.
“Ancient Roman Mural Motifs in Late Duecento and Early Trecento Painting,” Patristic, Medieval, and Renaissance Studies Conference, Villanova University, Philadelphia, 1981.