Featured at Grapes, Barley, and Hops! Original Lithographs By Parks Reece

This is information posted on the website of Parks Reece  about the lithography process:

 Lithography is a printing process invented in 1798 by Aloys Senefelder. Being only superficially similar to the mass mechanical printing process confusingly called "process lithography", it requires the direct participation of the artist at essentially every step. This challenging medium has been employed by virtually all great artists of the ages, including Picasso, Miro, Goya, and Toulouse Lautrec.

In summary, here's how Parks makes an original lithograph. First, he uses a grease pencil, air brush, or other implement to hand draw an image on mylar, which he then transfers to a ball grained aluminum plate. The plate acts essentially as a black-and-white version of only one of the colors that will appear in the lithograph. A color corresponding to the plate is chosen by Parks, and inks are hand-mixed by a skilled pressman. Through collaboration of the artist and pressman, precise color affects are arrived at using essentially the same care and creative freedom a painter uses when mixing pain.