"The ITCS has registered about 4,000 time capsules around the world
and estimates that there are probably about 10,000—many lost. Their
short list of missing time capsules includes one buried in 1983 by the
cast of the show M.A.S.H., the cornerstone George Washington laid at
the U.S. Capitol in 1793, and the Bicentennial time capsule stolen
before President Gerald Ford could seal it."

Before you bury the time capsule you've assembled, register it with:

International Time
Capsule Society
c/o Paul Hudson
Georgia Perimeter College
555 North Indian Creek Dr.
Clarkston, GA 30021
404/299-4172

http://www.attachemag.com/archives/08-05/features/story3.htm