Chris:
What time period do you want for your display? Mason (Detroit, MI) were made from the late 1800's to 1924. Do you want NYS carvers? Many excellent carvers lived in NY up on the River down to Buffalo. Many excellent carvers were located in Canada on the west and north shores of Lake Ontario.
The best books for an overall view of decoys is:
"Top of the Line Hunting Collectibles" by Donna Tonelli
and
"Fish and Fowl Decoys of the Great Lakes" by Donna Tonelli
both books are published by Schiffer Books for Collectors.
There is a good decoy show comming up in Cleveland see this web site
http://www.odcca.net/It would be a good place to see many vintage decoys.