Related Clues:

• Schubert's '___ Maria'
• North-south route, in NYC
• 'Hail!' in old Rome
• Abbr. on a business envelope
• Fifth in NYC, e.g.
• North-south rte., in New York City
• Bottom-of-env. header
• Pennsylvania in D.C., e.g.
• Commonwealth in Boston, e.g.: Abbr.
• "Ciao, Caesar"
• Urban way: Abbr.
• "Monopoly" board abbr.
• Old Roman greeting
• D.C.'s Pennsylvania, e.g.
• Melrose, e.g.