Since you are asking for "Any help", I'll chime in. I don't have any kind of "official" value, but I can tell you what I would pay for these chips if I wanted to add them to my collection.

Riverside - Nice obsolete, but used and notched: $5
Casino du 2 fevrier - $5-$10
Resorts - I paid about $20 for my chip, I'd value it at $20-$30
Artichoke Joe's - If this chip has the Chipco contact info. on it's reverse side - $15-$20, if it's good on both sides - $20-$25 (if this chip was on eBay and two or more bidders really wanted it, I could see it selling for a substantially higher price).

I have no doubt that different people will have different values for these chips.