@wnagzhaojun
It was a beautiful letter, but there was no way, except for the name Michael, to identify the owner.Maybe if I called information, the operator could find a phone listing for the address on the envelope.The operator suggested I speak with her supervisor, who hesitated for a moment, then said, "Well, there is a phone listing at that address, but I can't give you the number." She said as a courtesy, she would call that number, explain my story and ask whoever answered if the person wanted her to connect me.