Since you are a member, you can borrow books from the club library. Go to the link below, and click on the 13-page list of items in the library -- pages 5-6 include various history books.

http://www.ccgtcc.com/library.html

Also, if you're in LV, visit Gamblers General Store and/or Gambler's Book Club/Store. Each one has a section of Nevada & Las Vegas history books. For even further research, UNLV has an extensive gaming library.