WHAT IS A LITHOGRAPH?
Here is an example:
Matta Plate
by
Sebastian Matta
Click image to see more about this specific lithograph.
Lithograph Defined or described by the Metropolitan Museum:
Lithography is a planographic printmaking process in which a design is drawn onto a flat stone (or prepared metal plate, usually zinc or aluminum) and affixed by means of a chemical reaction.
First, the design for the lithograph is drawn directly onto a polished slab of limestone using an oil-based lithographic crayon or ink.