Shenandoah and World Trade Center at David Spragg´s web site: http://www.marlowcasinochips.com/lasvegas/lasvegas.htm

Winners Circle $25: http://www.directordercenter.com/Winners%20Circle%20Las%20Vegas%20$25%20Casino%20Chip%20J0829CC.html

Winners Circle $100 denom : http://cgi.ebay.com/VEGAS-100-WINNERS-CIRCLE-CHIP-EARLY-HORSE-OLD-VINTAGE_W0QQitemZ200223088788QQihZ010QQcategoryZ63756QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

The other Winners Circle denom are going to be little harder to find.

Montecito Set: ask Bob Hiestand

Hope I helped you!