For those who want a handy leaflet on labeling museum specimens, the Materials Conservation Laboratory, Texas Memorial Museum, published "Conservation Notes" in the mid-80s with an issue on this topic. The only thing "out-of-date" I see is the dissolution of B-72 in toluene,which I think is more harmful to the human body than acetone. Contact Publications, Texas Memorial Museum, 2400 Trinity, Austin TX 78705. Cost is a mere $1.00. Sally Baulch Texas Memorial Museum [log in to unmask]