> does anyone out there >know of any studies/technical data that gives information regarding light >damage, artificial ageing etc? It may be helpful to remember that you only have to scan a document once, and then you can print out "hard copies" as needed. This is better than "onesies-twosies" xeroxing for documents in high demand, since as you know, light damage is cumulative and non-reversible. Christen Runge Conservation Assistant Alexandria Archaeology Alexandria, Virginia [log in to unmask]