Photogravure

Photogravure is a type print making process that dates back to 1830's. It is a process that is still used today. It is a fine art process of making photographs. I came across a site today that is very much worth checking out.
http://www.photogravure.com

I also recommend doing a quick history lesson and check out this site. It offers the history of the photogravure as well as a brief part of the history of photography.
http://en.wikipedia.org/wiki/Photogravure

Here is an Alfred Steiglitz Photogravure 1894