Ah, the Merry Mailman. Loved that show,. Starred Ray Heatherton (father of Joey). But back to commercials...

There was a chain of appliance stores in New York called Sunset...
Sunset, Sunset
For appliances you need,
Sunset, Sunset
Everything is guaranteed
Sunset, Sunset
For easy credit, the place to go
Sunset, Sunset,
Call HIckory six-four-oh-oh-oh
HIckory, HIckory, HIckory
Six-four-oh-oh-oh

Contemporaneously, there was what may have been the world's first rap on the radio, a jingle without a tune, just percussion, for Palisades Park:
Now, after all is said and done
It's Palisades for having fun.
So during the day or when it's dark,
Visit this great amusement park,
Palisades Amusement Park.
Skip the bother and skip the fuss (beep beep!)
Take a Public Service Bus
Public Service sure is great
It takes you right up to the gate.