I don't know anything about that H&C mold "Bonanza Club" chip attribution, but the HHL-mold "Bonanza Club" chips attributed to Las Vegas, were almost certainly not used there.

There are preserved C. W. Rice order card records for those chips and they were sent to the Bonanza Club in San Jose, CA, in 1965. The chips are already listed there.

I normally just work with the California and Oregon listings, but I will remove them from the Las Vegas listing. The change will show up tomorrow. If anyone thinks that is a mistake, post your thoughts here, and I can put them back there.