I use Fascination Street Gallery that's here in 
Colorado.  They're awesome.  They're website is:
http://www.animationartwork.com/

Awesome people to deal with and if there's 
something that you're looking for that isn't on 
their site they may still have it in the store.  
The site doesn't have their full inventory on 
it.  They can also track down whatever it is 
you're looking for.  Hope this helps. ^_^