Can you elaborate on this? I know nothing about it.
Thanks, RedFury. I'm awed by the rate you seem to be adding holy pulp grails like those Magic Carpets to your collection. Major congrats!
There are quite a few sites online that can explain the stone lithography process better than me, but here's a brief intro in the context of something I also collect - antique cigar labels (though I like the boxes themselves):
http://www.cigarlabeljunkie.com/Html/StoneLith.html
Any single color - or ink - that could be conjured was applied directly to the image, one after another, individually. Laborious, yes.
Four color printing involves cyan, magenta and yellow (along with black), and although a wide range of colors is obtainable, the quality of the old handwrought images seemed never again matched (funny, coming from a four color devourer like myself, I know!).