This is quite a collection! The collectible plates from the 1980's are not worth very much and average as follows;
Hamilton Collection plates from the 1980's-$10.00 to $14.00 each
Pemberton and Oakes/Donald Zolan plates $10.00 and under each
Franklin Mint plates- $6.00 each on average (unless they are made of silver)
Knowles plates- $5.00 and under each
Calhoun plates- $9.00 average each
Reco Int'l plates-$15.00 to $20 each
The Fostoria Meadow Rose is elegant glass from the 1930's and is still quite collectible. You can expect $20 each for goblets, $15 and under for each smaller stem ware piece.
The best thing to do in your case is to find a local auction house that can auction these items for you. They would sell it and in 14 to 45 days you would get a check for the hammer price minus their 15 to 20 percent commission (which is negotiable if you have a lot of items). You can use the Google search to find an auctioneers in your area since I am not familiar with Wyoming auctioneers.
I do hope this has helped.
It is important for you to click the stars after you have read this answer.