Fascinating project > the Westinghouse Time Capsules
(from Wikipedia: https://en.wikipedia.org/wiki/Westinghouse_Time_Capsules)
The Westinghouse Time Capsules are two time capsulesprepared by the Westinghouse Electric & Manufacturing Company: “Time Capsule I”, created for the 1939 New York World’s Fair; and “Time Capsule II”, created for the 1964 New York World’s Fair. Both are buried 50 feet below Flushing Meadows–Corona Park, the site of both world’s fairs, the 1965 capsule 10 feet north of the 1939 one. Both are to be opened at the same time in the year 6939, five thousand years after the first capsule was sealed.