Does anybody know where I can find some source materail on Pittsburgh in Shadowrun? Is there a sourcebook or is it just on the net?

Didn't you hear? Pittsburg was destroyed! The whole thing is a weird crater called "The Pitt" now, with a weird volcano coming out of it and "Pitt Juice." All the Displaced paranormals that went there nearly died!

Check out this thread

I must have missed that. Is the whole crate thing in a novel or in the main rules?

That was a joke son. Old comic book series.