As Terry mentioned, http://www.silver-state-treasures.com/ is a great resource.

Another site you might try would be: http://www.CollectionLibrary.com/

We have approx 6,400 chips that have been published/documented by our users. About 4,200 of these chips are listed from Las Vegas, NV.

Please note: This site allows members to publish chips from their own collections. As a result, you may find a chip listed more than once within the global chip directory as the sources of these chips are from all of the collections published with the entire database.