The capsule was sealed on July 4, 1975, and is not to be opened until July 4, 2025. In 1977, Harold's dream came true as his time capsule was certified by the 1977 Guinness Book of World Records as the largest capsule in the world. The certification didn't go without debate; the Oglethorpe University of Atlanta, Georgia, claimed it's capsule, sealed in 1940, was the largest in the world. Harold said in his defense, that there capsule is only a sealed-off room in the campus building. Guinness finally settled the dispute by dropping the category all together.
Harold wasn't the kind of person to back down from a fight. In 1983, he build another time capsule directly over the first, to remove the doubt of who's time capsule is bigger. The second capsule also included a car, no one can remember the make of the car. The second vault also included tons of telephone books donated by local citizens.
He lived long enough to see his grand kids and share things with them from his generation. Harold Davisson didn't pass away until 1999, at the age of 91. One of his final arguments dealt with the process of opening the capsule. Another capsule tried to claim his title the year after he died in 2000, but after investigation, the vault falls short in square footage and Harold Davisson's vault still holds the title.