An early vacuum tube computer, Houston Texas: http://www.cs.rice.edu/History/R1/ I have been close to a piece of this; about the form factor of the 2001 monolith, 9 feet tall, 5 feet wide, foot thick. Plexiglas and all the construction, tubes very neatly wired. It floated around town for a bit, it served as a coffee table at Autocad for a number of years and we all spilled a few beers on it during after hours CAD conversations... It was picked up by a friend and a conversation piece in his garage. This we guessed was just one register, there were perhaps 20 or so of these likewise panels in the original. When in Houston, drop by, it is now in a proper place, Rice Library in the Woodson Research Center.