We have a number of holograms which we are preparing to exhibit. Due to past abuse, some of them are quite dirty with fingerprints, tape residue, and what looks like green lollipop remains. Can anyone make recommendations as to how we would clean them? They are on film, sandwiched with plexiglas. Any information as to proper preservation of this type of hologram would be much appreciated. TIA, Anne Lane Curatorial Assistant Museum of York County 4621 Mt. Gallant Road Rock Hill, SC 29732-9905 803-329-2121 ext 122 * [log in to unmask]