Visited DC yesterday. Went to a place called the Newseum. Pretty cool place. Among the many items there was the Unabombers cabin.
They also had his original typed manifesto. Note he heated with a wood stove.
They also had the antennae from the top of the world trade center, landing gear and engines from one of the planes, documents the hijackers carried, etc.
http://www.newseum.org/
Worth the time if you are ever in the belly of the beast.