I got the glass from MPS Auto Salvage a few years back, after the glass in my passenger side mirror was broken. I don't see it listed on their site now, but it might be worth a call anyway.
idk know of any other places, but I live near MPS Auto Salvage and they recently changed ownership and are much better to deal with now. They are great guys and if they don't have it, it won't be long till they get it in...highly recommended