Michael,
There are currently no known for Stanley but that really does not mean anything. I started with a list of 50 Idaho chips (including colors). I now have a list of 350+ and still feel that we have only cratched the surface with some areas having little if any searching. Stanley is one of the areas that probably has had little if any searching. I would never rule out chips since they provided the chance of "saying" that the game was "for fun" and no money was on the table.
Probably not what you wanted to hear but I can say it is current. I take pride and find it helpful to know where all "known" Idaho chips are.
Bill