1. Susan Lake chief conservator at the Hirshhorn Museum, has an MA in art history (University of California, Davis) and a PhD in art conservation research (University of Delaware). She wrote her dissertation on the analysis of Willem de Kooning’s paintings of the late 1940s and the 1960s. Address: Hirshhorn Museum and Sculpture Garden, 7th Street & Independence Av. SW, Washington, DC 20560, USA.
2. Eugena Ordonez is a graduate of the University of Delaware/Winterthur Museum Art Conservation Program where she specialized in the treatment and analysis of modem paintings. She presented a preliminary report on this research at the Western Association for Art Conservation (WAAC) annual meeting in Nevada City in November 2000. She is now working as a private conservator. Address: Painting Conservation and Research, 341 ½ Culver Blvd, Playa del Rey, CA 90293, USA.
3. Michael Schilling received BS and MS degrees in chemistry from California State Polytechnic University, Pomona. He has worked at the Getty Conservation Institute since 1983, and is presently a senior scientist and head of the analytical research section. Address: Getty Conservation Institute, 1200 Getty Conservation Drive, Suite 700, Los Angeles, CA 90049-1684, USA.