Related Clues:

• 'Mayberry --' (old TV show)
• Rustic mail svc.
• U.S. document issuer
• Local mail H.Q.
• "Mayberry __"
• Suburban mail svc.
• Outlying mail rte.
• Mail-sorting loc.
• TV's Mayberry ___
• Mayberry letters
• Main mailbox locale: Abbr.
• Rural delivery svc.
• Main mail HQ
• Service where there isn't a nearby P.O.
• Delivery notation: Abbr.