Have you tried contacting GR Rescue in Michigan?
Here's their info:

Golden Retriever Rescue of Michigan (GRRoM)
Hotline: 248-988-0154

E-Mail: [email protected]
Web Page: http://www.grrom.com/

Try the Classified Ads on Pet Finder. Although there are no listings today for a wanted GR, additions are being made every day. Check out the listings for wanted pets in Michigan here .

I will keep looking for other ideas and post later.