This is a great story about the time capsule recently discovered in the cornerstone of the Massachusetts State House. It was originally placed there in 1795 by Paul Revere and Governor, Samuel Adams, not knowing if it would ever be discovered. The idea of it is so interesting and thought provoking, I think it is worth the read. Here is a link to the story:

http://blog.gemr.com/video-an-eyewitness-account-of-paul-reveres-time-capsule-opening/