- Illuminated Manuscripts: Masterpieces in Miniature. The Walters Art Gallery, Baltimore. 1984-1985.
- Text and Image: Medieval Book Illustration. The Walters Art Gallery, Baltimore. 1986.
- Royalty in Medieval Miniatures. The Walters Art Gallery, Baltimore. 1992.
- The Book of Kings: Art, War, and the Morgan Library's Medieval Picture Bible. The Walters Art Museum, Baltimore; Academy Art Museum, Easton; Princeton University Art Museum, Princeton; The Mitchell Gallery, Annapolis; Williams College Museum of Art, Williamstown. 2002.