I recently stumbled upon Handsome Books. I feel in love and had to restrain myself from draining my bank account. The website archives, sells, and "specializes in books with decorative publishers’ bindings, designed and illustrated by some of the leading artists of the 19th and early 20th centuries." Just take a peek and you'll be sold, literally. I've just found my slice of heaven on earth.
(Found via Vondy)