Related Clues:

• Obsolescent mail abbr.
• Letter letters
• Road with a no.
• Abbr. on a Mayberry envelope
• Numbered rd.
• Mail letters
• I-95, e.g.: Abbr.
• A mail carrier has one: Abbr.
• 66, e.g.: Abbr.
• Itinerary abbr.
• Delivery path: Abbr.
• I-85, e.g.
• Address abbr.
• Rd. for a mail carrier
• U.S. 1, e.g.