Related Clues:
- 66, e.g.: Abbr
- U.S. 66, e.g.: Abbr
- Route, abbr
- GPS output: Abbr
- It may be lined with mailboxes: Abbr
- Pacific Coast or Alaska: Abbr
- Metro line: Abbr
- A mail carrier is assigned one: Abbr
- Trucker's circuit: Abbr
- Mail abbr
- Mail deliverer's assignment: Abbr
- U.S. 66, e.g
- Navigation line: Abbr
- Any I, e.g.: Abbr
- One of many on the 61 Across: Abbr