You may want to ask the people on the Visual Resources Association listserve. This question seems to in their province. The address is: [log in to unmask] Marianne Cavanaugh Saint Louis Art Museum At 03:09 PM 4/23/97 -0600, you wrote: >The Chaco Culture NHP Museum Collection has several hundred glass lantern >slides, hand-tinted, from the 1920s. We are currently trying to decide >the best medium for duplicating the slides (negatives, positives, etc.) >for research and future duplication requests. Any suggestions regarding >the best media, photo shops, etc. would be appreciated. > >Wendy Bustard >Curator >Chaco Museum Collection >505-277-2730 >[log in to unmask] > >