On June 17, 1973, when I was nine years old, I attended a New York Mets baseball game with my family. I know the date because I saved the ticket stub, just as I did with all my ticket stubs when I ...

When Russ Havens attends a game, he's very fussy about his ticket stub. In particular, he prefers that the ticket be torn, not just scanned. "Tearing it adds to the patina of it," he says. "It ...