The 1987 edition that finally got its sleeve back

Spent the evening re-attaching a loose board on a 1987 paperback that's been circulating since before I started here. Someone had stuffed a bookmark in it — a bus ticket from 1994. The book is a battered mystery novel, but that ticket made it feel like a time capsule. I patched the hinge, flattened the ticket, and put it back inside where it fell out. Some people digitize the past; I just glue it back together.