Massachusetts officials to open 220-year-old time capsule

Pamela Hatchfield, a conservator at the Boston Museum of Fine Arts, holding a time capsule she removed from the cornerstone of the Statehouse onDecember 11, 2014.

The contents of a 220-year-old time capsule placed under the cornerstone of the Massachusetts state house by U.S. founding fathers, including Samuel Adams and Paul Revere, are set to be unveiled on Tuesday.

The 10-pound (4.5-kg) brass box was removed last month from its home in the statehouse, an 18th-century building topped by a gilded copper dome made by Revere's company, and X-rays showed it held coins, a bronze medal portraying the first president, George Washington, and colonial records, officials said.

It was first placed under the cornerstone in 1795.