Paul Grisham enlisted in the Navy in 1948. He was assigned to Antarctica as part of "Operation Deep Freeze" which supported civilian scientists. So he shipped out to the frozen continent and at some point during his 13-month tour he lost his wallet, something he later forgot about.
It contained his Navy ID card, drivers license, a pocket reference card telling what to do in case of atomic, biological and chemical attacks, a beer ration punch card, a tax withholding statement and receipts for money orders sent to his wife. There was no cash, since there was nothing to buy in Antarctica. The wallet was found behind a locker in 2014 during demolition of a building at McMurdo Station on Antarctica's Ross Island. But returning it to it's owner took emails, letters and Facebook messages from a group of amateur sleuths. "There was a long series of people involved who tracked me down," Grisham admitted gratefully.