Senefelder and lithography

Lithograph printing allowed text and image reproduction, revolutionising the ability to duplicate line drawings. It relies on oil based inks being repelled by water and not transferring into a negative space.

“he jotted down a laundry list with grease pencil on a piece of Bavarian limestone. It occurred to him that if he etched away the rest of the surface, the markings would be left in relief”