Another question… for items I want to keep in a transparent enclosure (so they don’t have to be handled directly to view), there seem to be so many choices. I’m thinking the polyester or polyethylene envelopes might be the best because they’re closed on 3 sides (less chance of something falling out) and seem sturdier than the poly bags. But they’re also way more expensive than the polyethylene bags. Please help!
Hatfield Historical Museum
In the illustration: Acid stains from contact with cardboard