Exhibitions
- Illuminated Manuscripts: Masterpieces in Miniature. The Walters Art Gallery, Baltimore. 1984-1985.
- From Romanesque to Gothic: Illumination in Transition. The Walters Art Gallery, Baltimore. 1990.
- Illuminating the Word: Gospel Books in the Middle Ages. The Walters Art Museum, Baltimore. 2004.
- Checkmate! Medieval People at Play. The Walters Art Museum, Baltimore. 2010.