Hey Chris,
You might want to contact a pretty serious and advanced decoy collector who lives some place around Buffalo. His name is Walter Hallbauer.
I got his name from Bill Towner. Bill is also an advanced decoy collector who I have known for a lot of years. Bought a new Starcraft aluminum cartop boat from him about 45 years ago when he had a bike shop and boats. I still see him occasionally at the Rochester gun show. He doesn't collect decoys any more since his greatest asset, his eyes, got bad.
Bill recomended Walt as a source of info for a pair of Canadian decoys I have (Blue Bill Pair by Robert Samual Jones).
I never did contact Walt, but still have the decoys plus a Mason tackeye Redhead hen.
There is a decoy and wildlife art show in Clayton, NY (1000 Islands area) 3rd weekend in July. Probably too far down the road.
Good luck in your search and hope some of this helps.
I may have my 3 decoys for sale at the Rochester show March 31 and April 1.
Bill Jolliff