My husband, Harry Hite Nichol, was from Donelson. The local doctor was Dr. Dabbs, first name not known. He had a son who was a friend of my husband's named, J. W. T. Dabbs. I think this stood for John Wilson Thomas Dabbs. John was, but is probably retired now, a physicist at Oak Ridge National Laboratory in Oak Ridge. He is still living there would probably be able to clarify some of your questions. If you will Email me direct, I will share the address and phone number with you. Margaret Nichol