In a message dated 02-04-19 13:22:46 EDT, Shawn wrote: << Also, if anyone can answer this question, what kind of damage is done to photographs, art plates, postcards, etc...by scanning and photocopying. We do not allow flash photography due to the damage it causes but did not know about scanners and photocopiers. >> I'm not sure why you don't allow flash photography, as it's usually considered safer than the normal photographic alternative, involving prolonged exposure to hot, bright floodlights in a copy stand situation. You set up and focus with dim modeling lights, then use electronic flash for the exposure. A number of people have done studies with scanners and office copiers and have concluded that they're harmless with most materials. Unnecessary, repeated copying and scanning, however, can cause cumulative damage. This is why it's a good idea to scan something right the first time, just once, and not subject the object to repeated scanning at successively higher resolution. Really light-sensitive items, such as early salted-paper photographs, 1840s-1860, and fading color prints, are more safely photographed with electronic flash. If you need scans, you can scan the copy negatives or transparencies. David Haberstich ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).