A few web sites of further interest:

Andy Balkin has a contract printing facility in Madison, Wisconsin where he editions prints for artists.
Mauricio Lasansky has a studio and sales gallery in Iowa City, Iowa.
David Jones heads a nonprofit print establishment in Chicago, Illinois called Anchor Graphics, where prints are exhibited, created and editioned.
The Museum of Modern Art in NYC has an informative website on understanding original prints.
Ben Mahmoud, an excellent painter in Dekalb, Illinois, has a site worth viewing.
Mike Aparicio designed and developed