Related Clues:

• Obsolescent mail abbr.
• Letter letters
• Abbr. on a Mayberry envelope
• Mail letters
• Postal abbr.
• Address abbr.
• Bldg. with boxes
• ''Mayberry ---''
• Main mail ctr.
• It issues fed. docs.
• 'Mayberry --'
• TV's 'Mayberry ___'
• Mailing abbr.
• Mailing ctr.
• ''Mayberry ___''