STEVE INSKEEP, HOST:

Good morning. I'm Steve Inskeep. A woman in Boston decided to visit the New England Aquarium. And she got in by using a ticket that was nearly four decades old. Back in 1983, her great-aunt purchased a late gate ticket, which was like a rain check. No expiration date - quote, "good for admission at any time in the future." The aquarium discontinued using those tickets about 25 years ago but says a customer still presents one of the old tickets about once each year. It's MORNING EDITION. Transcript provided by NPR, Copyright NPR.