Thanks for the replies folks. I know what your talking about David. It was determined to be the third stage of the Apollo 12 mission. It actually is still in orbit, it has moved away from the vicinity of Earth. If I remember right, it is due to come back in about 35-40 years.
I think that it would be possible to see "Snoopy" from Apollo 10. Just a little bit of history orbiting in space that the general public is not aware of.
I'm suprised that Robert Ballard of Titanic fame has not found all of the Saturn 5 first stages that fell into the Atlantic.