Via Pawn Times, a link to a page of advice from Beverly Hills Pawn (where the movie stars go, so they say) about how to protect your artwork, particularly prints, lithographs and photographs.
Our Maui pawn shop also takes artwork in on pawn, and like Beverly Hills Pawn, we store it in climate-c0ntrolled spaces. The post has some cautions about storing your stuff at home, and that goes double for Maui, where humidity and mold are worse problems than in Southern California.
The post does not say it, but protecting art is cheap (how much can a Mylar sleeve cost?) while having a conservator restore it is expensive.