Sorry to learn of Bill's passing. I am a grandson of Nettie Geist, son of her daughter Marie Folberth. (Bill and I are 2nd cousins once removed.) I keep a family chart which includes a large number of Geists from the Cleveland area (where I was born). I am also, like Bill, an MIT graduate. I would like the opportunity to get more information about his family if you are willing to share it.