Further experiences in museums and art galleries are reported regarding the use of conditioned silica gel for the buffered control of relative humidity within specially designed cases. Recent projects are described: the case enclosure of a very large panel painting by Neri diBicci, an early Irish harp (featured in the early Irish treasures exhibition), and a variety of important ethnographic treasures, such as a Benin bronze. The method of selection of the silica gel presentation system is discussed for each installation. Also described are the holding devices, method of case closure, and monitoring instruments for recording the relative humidity. Of the latter the most practical ones are also the least expensive, i.e., cobalt strip indicators. In museum situation it is necessary to develop case designs which are trouble-free for very long periods of time, and which have the least problems with monitoring and calibration of instruments.