Question: What does the RFD in Mayberry RFD stand for? My sister in law thinks it means "Return from (something)." I think it means "Rural Free Delivery." Thanks. George R.
Televisionary: By George, you're correct. It does stand for the postal designation Rural Free Delivery. That, according to the post office's own glossary, is the network of roadside mailboxes owned by people who live in communities too tiny to have their own postal facility.
And it's no longer called that, by the way. The current term is Rural Delivery Service.