The thing is, if these are traditional Panamanian/Guatemalan(?sp)molas the fabrics have probably been made using natural plant dyes. If they were mine, I'd check online for someone (probably at a museum or a place like Winterthur), who can tell you what you have and what to do with them. Of all the suggestions I've seen above, I think the only one I "might" try is using the clothes dryer on air for a few minutes but I'm not even sure about that. Talk with someone; given their age you won't really know what you have until you do. It's a beautiful collection and almost overwhelming in it's size. Joyce in DE