So sorry to hear of this. Tom is a genius at making this hobby "come to life". I was fortunate enough to meet him once. A friend of mine owns the HO scale Strasburg Model Railroad Club of South Jersey. After displaying his layout at the Strasburg Museum in 2017, we went to the Choo Choo Barn. When Tom heard we were there, he came down to greet us. He gave us the "grand tour", including behind the scenes and answered numerous questions. His ingenuity is surpassed only by his good will.
May God bless Tom and his family