Exhibitions
- Illuminated Manuscripts: Masterpieces in Miniature. The Walters Art Gallery, Baltimore. 1984-1985.
- Making Music in Medieval Manuscripts. The Walters Art Gallery, Baltimore. 1988-1989.
- Medieval Mastery, Book Illumination from Charlemagne to Charles the Bold (Meesterlijke Middeleeuwen). Stedelijik Museum Vander Kelen-Mertens, Leuven. 2002.
- Seeing Music in Medieval Manuscripts. The Walters Art Museum, Baltimore. 2014.