I started going there around 1972 and never stopped. When I started going there one of the co-owners was Linn Burton, a velvet-tongued radio and TV pitchman most famous in that era for his Burt Weinman Ford used car commercials ("and look at this beauty ....."). Linn was actually behind the counter collecting the money and passing out the orders. Linn was no spring chicken then and at some point sold out to his partner, Vince Schoenberg. R&B remained under Vince's or his family's ownership until it closed.
I keep looking for a barbecue restaurant to replace R&B in my heart but I doubt I ever will. I intend to study this site so I can cook my own!