"One of the Merry Mailman's (Ray Heatherton) best claims to fame is that he was the father of actress/singer Joey Heatherton who was definitely not a children's show personality "
You're on both! I had confused Candice Bergen's father are the Merry Mailman..
Edgar Bergan .. and his 2 friends Charlie McCarthy and Mortimer Snerd.
Here in NY we had Officer Joe and the 3 Stooges "Kids don't try this at home the Stooges are trained professionals!