Exhibitions
- Illuminated Manuscripts: Masterpieces in Miniature. The Walters Art Gallery, Baltimore. 1984-1985.
- The Nativity in Medieval and Renaissance Manuscripts. The Walters Art Gallery, Baltimore. 1987-1988.
- Time Sanctified: The Book of Hours in Medieval Art and Life. The Walters Art Gallery, Baltimore. 1988.
- Manuscript Painting in the Renaissance. The Walters Art Gallery, Baltimore. 1989-1990.
- Outdoor Space in Medieval Book Illumination. The Walters Art Gallery, Baltimore. 1990.
- The Gothic Illuminators of Florence. The Metropolitan Museum of Art, New York. 1994-1995.
- A Renaissance Gem Revealed: Petrarch's Triumphs Disbound. The Walters Art Museum, Baltimore. 2002.
- Dressed in Gold: Books of the Italian Renaissance. The Walters Art Museum, Baltimore. 2005-2006.