I was doing some research on the internet, and in many mentions about Harry Rigby (1925-1985), there is nothing about his cause of death. Is there anyone out there who knew Mr. Rigby and knows what happened to him in the end? He apparently didn't show up for an appointment, and someone was sent to his apartment, where he was found. He was the producer of Broadways " No, No, Nanette", "Irene", "Good News" and "Sugar Babies." Thanks in advance for any help.