My brother has the color ET in a coffee-table book called Every Man My Enemy: http://www.amazon.com/Every-Man-My-Enemy-Skinner/dp/1584234695. it's only 8.5x11" though.
There is an ET one on his online store but it's not that one: http://shopcriticalhit.com/collections/prints-1?page=3
On that page there is also a "Simple Life" print with what appears to be a chihuahua coming out of Paris Hilton's vagina. Which is all right by me.
You could try contacting the artist too maybe.