There has got to be a special place in Hell for architects... one of whom designed two of the exhibit vitrines in the lobby of our new building as tall vertical cases with tungsten halogen lamps in the ceiling of the case (no light attic), i.e., _inside_. Resultant heat build-up is a lesser concern compared to the fact that such lamps are a rich source of UV emissions. (There is also a sprinkler head in each, and the sprinklers in this part of the bldg are not pre-action dry pipe, as they are in the collection storage areas, hence, water just above: but we have to deal with what can be dealt with.) To the point: UV is universally & routinely filtered from fluorescent lamps with plastic filters. However, tungsten halogen lamps run very hot, so that is out. If we could find out the fixture mfgrs, they might have the answer . . . which is probably a heat-resistant glass filter. Any ideas appreciated. Henry Grunder Conservation/Preservation Cordinator The Library of Virginia