Since we have been on the subject of whether flash photography will hurt museum objects, I thought that this citation might be helpful. Mills, John S., and Raymond White. THE ORGANIC CHEMISTRY OF MUSEUM OBJECTS (Guildford: Butterworth Hein, 1994). 2nd edition. Part of the Butterworth-Heinemann series in conservation and Museology. The previous edition was in 1987. Anita Cohen-Williams; Reference Services; Hayden Library Arizona State University, Tempe, AZ 85287-1006 PHONE: (602) 965-4579 FAX: (602) 965-9169 BITNET: IACAGC@ASUACAD INTERNET: [log in to unmask]