Yeah, the number 1 is on the cover.
http://www.borndirty.org/wp-content/...arlHyde_03.jpg
I don't think that necessarily guarantees a release of a number 2, but leaves the door open, should Rick feel like it.
The book was a program guide for the exhibit. You can see the cover about halfway down on this page:
http://www.lapnet.jp/event/event_r100825/topics.html