Sally, Greetings from Nebraska. You say the trophy heads have data. I'll presume they all test positive for arsenic or other nasties. Contact the nearest, and these days you usually don't have to go too far, DNA researcher and find out if the tanning process wipes out the usefulness of the specimen for DNA work. If it doesn't then find out how much hide (fur and all) would make an adequate sample. Remove that much, or twice that much, hide and note the change from taxidermy mount to skin sample. A photograph would be recommended for record. The remaining piece, horns/antlers and hide, and be disposed of various ways. Horns/antlers to learning centers from Kintergarden to College Mammalogy, the U.S. Fish & Wildlife forensics lab in Oregon would love hair samples for comparison of suspected illegal imports, right back to shipping the specimen to the original country as educational material in their museums in exchange for more pertinent material you need. Glass eyes,particularly antique ones, are usually snapped up by taxidermists, maybe in trade for cleaning and remounting of material you do want to keep. Contact the local hazardous materials program for proper disposal of head forms, etc. Good Luck Thomas Labedz [log in to unmask]