Exhibitions
- The International Style: The Arts in Europe Around 1400. The Walters Art Gallery, Baltimore. 1962.
- Illuminated Manuscripts: Masterpieces in Miniature. The Walters Art Gallery, Baltimore. 1984-1985.
- Manuscript Painting in the Renaissance. The Walters Art Gallery, Baltimore. 1989-1990.
- The Gothic Illuminators of Florence. The Metropolitan Museum of Art, New York. 1994-1995.
- Music in Manuscripts. The Walters Art Gallery, Baltimore. 1996-1997.
- Dressed in Gold: Books of the Italian Renaissance. The Walters Art Museum, Baltimore. 2005-2006.
- The Legacy of Giotto, Art in Florence, 1340-1370. Galleria degli Uffizi, Florence. 2008.
- Seeing Music in Medieval Manuscripts. The Walters Art Museum, Baltimore. 2014.