I Have No Mouth and I Must Scream

Where can I get ahold of this?  The plot seems very intriguing.  And on that note, are there are stories or novels similar to this that you can recommend?  Or any postapocalyptic/dystopian sci-fi stories for that matter?

I know the short story is old, but I'm hoping to get a copy of it that is actually tangible.  I don't want to have to read a pdf file =\

>>8
I feel bad for recommending a non-book here, but I feel good for introducing a person to SS. :|