He received a letter from a soldier in Viet Nam during the war asking Reagan to tell his wife he loved her. Several days later Reagan showed up in front of his wife's door. When she opened it he said, "Hello, I'm Ronald Reagan. Your husband loves you." He gave her a dozen roses, smiled, and walked off. Almost nobody knew about it until publication of of the Schweizer book.
I vaguely remember reading somewhere that Reagan had an organ transplant flown to the patient in a fighter jet. Have you run across that, or am I mistaken?
No doubt you have heard the story of Frances Green from California.