Jackie...nice group of chips.
I can give you some book prices, but most of the time the actual sales prices are about half of book. ( Sometimes more or less) please do yourself a favor and listen to multiple people/suggestions, as many chippers will value the chips differently.
You might find chips like yours on eBay...some prices are inflated greatly...there is a Dunes $5 on there for almost $5,000. The actual book value would be closer to $500. Consider condition and desirability...you would most likely get $300+/- each.

The Caesar's $5 chip would book at about $300...sale value probably $150+.
The Sahara...very common and only worth a couple of dollars.
Riviera $1.... You have 2 different chips there...one has book value of about $250 the other is about $60... again...cut them in 1/2 for a sale.
Riviera $5... Book at about $30... You might get $10-15

Please get other opinions....as I am just gushing what I have seen in the past. Also consider multiple offers. If all else fails...put them on eBay individually and just get the most the market will pay.
Good luck to you.