Thank you sir! I will start pulling at that thread.I would start in Belmont County if it were me. I would also start reading about the men in question and their immediate family and friends. Also, I would see who they had contact with later on in their college years because that is where they would become of age to join secret societies. I would start with this man. https://en.wikipedia.org/wiki/Lambdin_P._Milligan
But, you can start anywhere you want to there.