Finding biological parents in Michigan - have their names but don't know how to

Question:

Finding biological parents in Michigan - have their names but don't know how to find them.?

My father was adopted when he turned 1 and I have paperwork with the names of his biological parents. What is the best way to contact them or thier family?

Additional Details

7 months ago
He was adopted through the court system - no adoption agency was involved.

Best Answer - Chosen by Asker: 7 months ago
He was adopted through the court system - no adoption agency was involved.