encylo B451
http://news.yahoo.com/blogs/up...t-run-005141357.html

That made me kind of sad but probably shouldn't have as our set is older than I am and our sets of World Book are not much younger. Those, occasionally, at least get used for their intended purpose. I have a set of Encyclopedia Americana which has served as nothing but a cat scratching post for as long as anyone can remember. If anyone wants a set of Encyclopedia Britannica, my cousin may still have the one he was just trying to unload on Facebook.