For everyone who does not know yet: The settings in the original Star Wars movies were created with amazing matte paintings. You can see some of them here.
Aside from the stunning technical aspects these paintings are magnificent pieces of art on its own. As you can see in the link these paintings are quite large. I am craving for some of them as wallpaper for my desktop or even wall, but all images I can find on the web are of low quality.
Were high quality photocopies or something similar ever fashioned from these paintings that can be acquired in some reasonable way?