I have the address somewhere but can't find it. Ask HH at the convention. Blanchard might see this and have the address.

I suggest going to the Library and searching through old phone books. It is a very worthwhile project. There are 100's L mold chips that they distributed. Many, many, many are UFC's. It might not be listed under gaming supplies, it could very well be a sporting goods store, games store, cigar store. etc. If I was doing it, I would call every Rice in the phone book for the surounding area. I feel certain you will find a relative if not ole C.W. himself.

Do a newspaper search at the local newspapers.

Its not hard or expensive. I just spent a couple days doing it for Tommy Haines (arrowdie). Managed to come up with some additional information, but no records as of yet. I found an ad through a newspaper search, for the grand opening of Casino El Rancho Dio on Highway 91, in 1942. Tommy was listed as a 1/2 owner. The casino is listed in Fullers book but no known chips.
Good luck.