Hi Rose,
I would add "The Chip Rack". I would also add another price guide: A Collector's Guide to Nevada Gaming Checks & Chips. It was written by Howard and Kregg Herz in 1993. I believe it is out of print but I'll be honest with you........I couldn't get along without it. Trust an old collector, if you can find one......buy it! You will not be sorry. It will show you black and white pictures of chips that are not listed in either of the books being discussed in this thread.
Jim